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   Release notes for the official ARGOS LABS releases. Each release note will tell you what’s new in each version, and will also describe any backwards-incompatible changes made in that version. These release notes summarize the new features, resolved and known issues, and compatibility. Need help? Contact to

  • 'Scenario Studio'(a.k.a 'STU') is a build tool for a RPA bot.
  • 'Process Automation Module(a.k.a 'PAM') is a software agent to run a bot.

Latest Version

  • STU: R20.1015 

  • PAM: R20.1015 

Release Notes

New Features

  • NEW  Added "Function". You can define a bunch of operations as  "Function" and you can call by using 'Call Function' operation.That process jumps to a specific function, and when the function's operation is complete, it returns to the next operation of the 'Call Function'. Also, 'Call Function' could be used as a nested architecture.
  • NEW  Added a new option "ClearVariables" to "Set Variables". 
  • NEW  You can use your UserVariable as Index value in 'Repeat'.
  • NEW  Added a new option  'SendKeys' to HTMLAction
  • NEW  Added Edge browser to browsers that can be used w/ Open Browser. You can select a browser in PAM Service Service > Settings. (added PAM R20.1015.10)


  • CHANGED The process by which PAM uploads the resulting image to the server is split into standalone programs.(added PAM R20.1015.10)


  • FIXED In Set Variables, when a variable with a different group name and the variable selected in the variable selection window is directly entered, the variable is not set.
  • FIXED Fixed a problem that Bot operation fails when the first operation of the first step is changed to Disable state
  • FIXED Fixed a problem in which one character was removed at the end when there was no value in the option to remove the text before and after the text as a result of OCR


  • CHANGED STU starting performance is improved. Changed to import plugin list after executing STU
  • CHANGED Select a plugin version (The plugin version previously used to build the bot doesn't change automatically.)
  • CHANGED Fixed the location of the operation search box.
  • CHANGED  Add 'Language Hint' to "Google OCR"
  • CHANGED Plug-in operation completion notification function (displayed as a tray message when a plug-in operation is done )
  • CHANGED Added a new Input method option to ShortcutKeys (RDPSupport, SendInput )
  • CHANGED Added an option to save image during 'Test Run'
  • CHANGED Changed an icon image size of PAM Tray. ( 128 x 128 → 64 x 64 )


  • FIXED Fixed the problem of sorting icons alphabetically
  • FIXED Fixed the problem that the initial value of dialog properties was incorrectly entered
  • FIXED Fixed an issue of not getting a focus when using Open Browser

Release Notes (Previous Versions)


  • CHANGED Added "Close browser automatically" option to Open Browser.
    After the Open Browser operation ends, it is possible for the Browser to remain open.

  • CHANGED Result Handler name changes

  • CHANGED Added link to "Create Support Request" (mailto:  & "Learn about Return value" to Official Plugin

  • CHANGED  When selecting or moving an operation in the Timeline (Operation List), to prevent it from going into an infinite waiting state, the list is not clicked until an STU response is received.
  • CHANGED Delete temporary picture files 2 days after the end of STU
  • CHANGED Improvement of XPath search function of Windows Object


  • FIXED When saving a bot, a notification message is displayed if there is nothing to save.

New Features

  • ADDED Added an On/Off option that "Chrome is being controlled by automatic test software" message that appears or not when "OpenBrowser" starts


  • CHANGED Improved “Kill Process” - Getting the process ID automatically by mouse Drag&Drop gesture.
  • CHANGED The speed when bots are saved is improved.
  • CHANGED Removed the step asking STU to run at the end of the STU installation process.
    Eliminates administrative rights issues for STU installer


  • FIXED Fixed the ‘Recovery page’ pop-up not to be displayed when 'OpenBrowser’ starts
  • FIXED Fixed an issue where ‘Repeat’ operation were duplicated in loop if other operations were selected above and below of ‘Repeat’ and do ‘Duplicate’ in repeat loop.
  • FIXED Fixed an issue where ‘moving to’ or ‘copying to’ another step with the auto-selected state after duplicate an operation
  • FIXED Fixed an issue that popped up when clicking the screenshot area when there was no screenshot
  • FIXED Fixed an issue requesting PAM registration again when network information changed.
  • FIXED Fixed to disable developer extension mode pop-up when Chrome is opened with OpenBrowser

New Features

  • ADDED ‘Click Text’ option to ‘OCR’ Op
    A function that recognizes a character in a range specified by OCR and clicks when the corresponding character exists
  • ADDED  an option that save return value of ‘JavaScript’ Op


  • CHANGED ‘Send Log’ UI (Calendar UI)

  • CHANGED plugin name to display only 2 lines (Tooltip support on mouse over)
  • CHANGED The default plugin display order is alphabetical order.

    However, the plugin arrangement of the user who was using STU is not changed automatically because the saved view is already used.
    He/She can change it to ‘alphabetical order’ like this.

    1. Click a cog icon at the bottom of the “Operations” panel.
    2. Click “Restore Default” to return to alphabetical order
    3. Click a disk (=save) icon
    4. The icon order has now been changed to alphabetical order.



  • FIXED an issue that caused bots to stop running in 'RunProgram’.
    Moved to the next operation whether the results status of ‘RunProgram

New Features

  • ADDED Added the function to select a specific image using sequential index when there is the same OCR target image


  • CHANGED PPM (20200227-1200)
  • CHANGED STU Launcher

    • Run STU automatically when you log in.

    • Logout automatically when the STU ends.

    • Remove the Mobile/PC button

  • CHANGED Improved running performance of Plug-in Management Module (PPM)
  • CHANGED Run STU and PAM without ‘Administrative Authority’ (no need ‘Administrator rights’  )
  • CHANGED Improved UI:
    • STU Info
    • Group by’ of Operation list
    • Remove ‘Mobile/PC’ button in STU Launcher
  • CHANGED Stop the scenario during "Delay" operation


  • FIXED Fixed an issue where PAM was not updated when the PAM tray service  was on 
  • FIXED Fixed an issue where plugin is disabled when changing the icon settings (Internal feature)
  • FIXED Fixed an issue that scenario saving and operation list does not work when ‘Beep’ is moved to other step
  • FIXED Clicking the "Refresh" icon in the STU will restart the internal web service (the blank screen issue)


  • CHANGED  'Drag&Drop' to 'Context Menu' when copying / moving operations
    When :
    • Copy / move operation to another step
    • Make a duplication(copy) of operation 
  • CHANGED Variable setting UI 

  • CHANGED Results window UI of 'Test run'
  • CHANGED The arrow for displaying 'Loop' is displayed only when the relevant operation is selected.
  • CHANGED If a plug-in execution result fails, the plug-in error message is displayed on the result screen of 'Test Run'.


  • FIXED Fixes a problem where an error occurs when importing a step with no step selected
  • FIXED Fixes an issue with the 'PAM Manager' where the PAM process terminates unexpectedly or the next bot is not running.
  • FIXED Fixes a problem where a bot created on a screen whose 'Scale' is not 100% does not work properly
  • FIXED Fixed images to be saved only once in 'Repeat' loop
  • FIXED Fixes the problem of PAM version synchronization with PAM version displayed by Supervisor


  • CHANGED Reduced bot start time for “On-Demand“ by Supervisor.
  • CHANGED Change scenario status to 'Failure' when plug-in fails
  • CHANGED Reduced the launcher screen size to make it easier to see on small screen resolutions


    820 x 740800 x 640
  • CHANGED Delete the function of saving and uploading screenshots by step
                           (reduced the free disk space required for PAM)
  • CHANGED Write image file count on a log before uploading verification image


  • FIXED Fixes a problem where an error occurs when test run without setting a value in the plug-in.
                           (Scenario does not work and an empty result screen is displayed immediately.)
  • FIXED Fixed an issue where a ‘Test Run’ or On-Demand task would be killed before completion when running the PAM manager service.
  • FIXED Fixed a problem where SelectWindow is used as ‘Web’ type when using http: // or https: // for App Name.
  • FIXED Fixed a problem where PAM agent being killed by PAM Manager during plugin installation
  • FIXED Fixed an issue where an error occurred when Pam Tray was not connected to the server.
                            new “Can't connect to server" message pop-up appears.

New Features

  • ADDED  Mouse Triple click ( Select entire sentence ) to 'Windows Object" 


  • CHANGED Changed to the latest version of plugin management module (aka 'PPM')
  • CHANGED 'ARGOS RPA Service Tray' (aka 'PAM') registered as 'Auto started application' and always running for 'On-Demand by CHIEF'
  • CHANGED Remove 'Watcher service' from PAM tray menu
  • CHANGED In 'Excel Advance', 'Variable for file' changed to 'Filepath variable (required)'


  • FIXED In "File / Folder OP", an error that occurred when only 'Source File / Fol ...' was specified in the 'remove' option and 'Targer File / Folder' was not specified.
  • FIXED an error caused by incorrectly using 'UserParams' message name as a variable name
  • FIXED an error that the input value will be unusable when the 'Value' of 'TextInput' or 'Parameter' of 'HtmlAction' is encrypted 

New Features

  • ADDED  Mouse Triple click ( Select entire sentence )


  • CHANGED 'Skip' icon moved under '?' .
  • CHANGED New UI of ‘User Params’  ( added 'Title' & 'Message'  input box )

  • CHANGED Editing a variable in ‘Set Variables
  • CHANGED New Pop-up windows - After the STU terminates unexpectedly due to a crash, 
  • CHANGED restarting the STU will display a popup asking if the old bot should be loaded.
                            (If you have a temporary bot file)


  • FIXED Bug fixed: Disappearing image clip & search area box in 'Locate Image
  • FIXED  SelectWindow issue where only the taskbar area flickers without focusing when measuring schedule.

New Features

  • ADDED POT ( Python-to-Operation Tools on the Cloud ), Newer plugin management feature in ARGOS RPA+.

    RPA Plugins are managed on the Cloud repository. User can select plugins which they want to use their Bot. Under the new system, user can build their own Plugin and share on RPA marketplace or manage it in their private POT repository more freely.You can find all available and new plugins in 'Plugins' menu of CHIEF.

  • ADDED  Test run by Operation ( Right click on a mouse at the Operation list ).
    There are 3 options:
    • Operation Number: <Op No.>  : 'Test run' runs <Op No.> only.
    • Operation Number: <Op No.> ~ End of Step  : 'Test run' runs from <Op No.> to the end of step
    • Operation Number: <Op No.> ~ End of Scenario  : 'Test run' runs from <Op No.> to the end of scenario

  • ADDED 'XPath' to 'HTML Action'.

  • ADDED OCR image enlargement function added
  • ADDED 'First row contains column header' option to all plugin when using 'CSV' as a result type
    The first row of CSV result type is a header line by default. But, sometimes it has to be removed to use as an input data of the next operation.
    Now, user can select to use/remove the header line from the CSV results.
  • ADDED 'Send Logs' menu to 'ARGOS RPA Service Tray' menu


  • CHANGED Default location for saving scenario files to 'Documents' ( previously %appdata% )
  • CHANGED Variable selection combo box to remain unselected
  • CHANGED Whenever the plugin result processing type is changed, the variable selection is initialized.
  • CHANGED The default extension JSON has been changed to BOT when saving bots to local disk. BOT is an all-in-one file containing scenario files and screenshot images.


  •  FIXED A problem that sometimes the item list can not be updated when moving the step
  •  FIXED Terminate all child processes of PAM when 'Test Run' ends

New Features

  • ADDED Sending a STU log to Tech Support via E-Mail or from the launcher menu.

    MethodHow to SendDescription
    via E-Mail

    "Help >" in Top menu

    User must have an e-mail client that sends e-mail, such as Outlook. A new e-mail message editor window appears with the log file attached.

    From Launcher

    1) Click the right button of mouse on the Launcher icon,

    2) Choose 'Send Logs'

    3) Select a date you want to send
    (A date where the log file exists is displayed as Bold)

    4) Click 'Send logs'.

    The log file will be sent to the log collection server directly and will be notified to Tech Support for further analysis.


  • CHANGED Removed the default 0.5 sec pre-operation delay in Delay action.
  • CHANGED Reduced the file size 30% and above when saving bots.
  • CHANGED 'Movie' menu moved under 'Help' and links to new movie library.
  • CHANGED "Open RPA supervisor page" to "Supervisor" in 'Help


  • FIXED User can control the inter-character delay by using 'TypeText inter-character delay' value of PAM in 'Text Input' action. If the default value (100 ms) of 'Text Input' is not fit in your bot, you can control the text typing speed by using increase or decrease the delay.
  • FIXED Even if the STU Launcher is terminated, child processes still remain.
  • FIXED SelectWindow could not move a focus on 'CMD (prompt window)'.

New Features

  • ADDED Mobile CHIEF (Android App) released. You can download from Google Play store. IOS version is also coming soon.

  • To download, click here, 'ARGOS CHIEF '.

    ARGOS CHIEF provides:

    - Real-time monitoring – Provides Active and Completed Bots(Live Status)
    - Bot analytics – For higher Bot utilization & efficiency
    - Cloud or Premises
    - Bot Schedule management 
    - Log activity management
    - Alarms management

  • ADDED  'Search keyword'  in Top menu bar. You can search a keyword related documents from Wiki.
  • ADDED  'Benny's Secret Function (aka BSF)' added under 'Help'. It explains a variable system of ARGOS RPA+.


  • CHANGED Renew the code signing certificated. If you install from the scratch, please, read this, '"What is 'Windows Protected your PC' message?".
  • CHANGED the progress popup UI when starting STU. Also, the starting message has been further refined to 'Initializing' and 'Downloading Plugin'.



  • FIXED  an invisible problem when private plugin property values were saved and loaded
  • FIXED 'Object...' related error when saving without 'STEP' selection

New Features

  • ADDED New actions by Plug-in
Action NameICONGuideDescriptions
Window Object

  • find a specific windows object and do 'click' on that object.
    Its operation is very simlilar to `SelectWindow`,
    but this is more useful when images or object location to be compared often change.

  • Unconditional Go To
  • Jump to the specific Step and Operation
String Manipulation

  • Find/Relace/Split a word in a string or a text file with `Regular Expression`
  • Support operations: Find, Replace, and Split
Web Extract

  • scrap(extract) the web contents.
Data Conv

  • convert a file format among JSON, XML, CSV.
  • Supports CSV-to-TSV, CSV-to-_SV, JSON-to-XML, XML-to-JSON
  • csv2tsv: converts CSV to TSV (Tab-separated values) format
  • csv2_sv: converts CSV to a character separated values which you specify as 'Target separator'
  • json2xml / xml2json: converts JSON to XML format or vice versa


If you are updating from a version earlier than R19.0513, please do not use STU immediately after the update and restart STU completely and update to PAM as follows.

  1. Close the sign-in window to end STU execution
  2. Terminate 'STU Launcher' from Tray menu
  3. Restart STU
  4. Update a PAM if you see the update pop-up
  5. Enjoy RPA life with new STU & PAM !


New Features

  • ADDED  New actions by Plug-in - TTS, File Monitor, File/Folder Op, SSH Command 
Action NameICONGuideDescriptions
Text to Speech

  • Text-To-Speech Support using Google TTS engine
File Monitor

  • Monitor the status changes of folder by file operations such like create/delete/move.
    This is used to create a workflow that is triggered by file creation.
  • Get a file list and iterate process each file
    This is used to create a list of files, and use 'Repeat' to iterate through the files in the list.
File/Folder Op

  • Operation target: file or folder
  • Available operations: copy / move / remove
  • All operations include subfolders by default.
  • Advanced options:
    • Preserve: This will preserve the timestamp of source file/folder while copying / moving.
    • Symlink:
    • Update: This will overwrite when the timestamp of source file/folder is newer than destination
SSH Command

  • Connect to a *nix server using SSH
  • Run a simple CLI command and get the results
  • The returned results can be saved as an Array variable, and used in next operations.


  • ADDED PAM update check right after STU update
  • ADDED New stop hot-key (CTRL+ALT+C) for the “Auto Recording
  • ADDED Default bot file name when saving bot. 
  • ADDED New ‘Import Step’ under 'File' menu. This is used to copy a bot from another one.
  • ADDED New ‘SKIP’ operation.
                            Replacement for the DISABLED stamp / new icon & color, multiple operation selection support.


  • ADDED  ‘search keyword filter’ to ‘Schedule’, ‘Scenario-PAM status’, and ‘Job History’ in dashboard.


  • CHANGED  In ‘Scenario’ menu, ‘Update date’ is the default order.

New Features

  • ADDED 'CompareValues' action (if-then-else)

                - compare to return values or user variables and jump to another Operation or Step. 

  • ADDED  'Paste' option in 'TextInput' action
    - Mark on 'Check box' to use 'Paste' action.

  • ADDED Improved'Excel Advanced' action 
        - Added 'n x n'  selection & can use an excel formula 

    You can run in background mode without real MS Excel installation. 
    'Excel' action runs on OS X, Linux, also.

        (ex)  n x n data range selection, n x n data reverse, read/write from/to CSV format.

    MS Excel is still needed when a user wants to use 'Excel formula'.
    To support 'Excel formula', we need more time. For now, we have a half solution.

    ※ New Options
       - sheet: Name of the sheet to read (Default: the last saved-active-sheet is selected)
       - range: the range to read
       - reverse: redirect (convert vertical data to landscape)
      - big: All data in the selected sheet (not available with reverse option at the same time)
      - write: the file path to write to
      - write_sheet: the name of the sheet to write (Default: Sheet1)
      - write_cell: cell start position to write (Default: A1)


  • ADDED  Japanese language pack renewal
  • ADDED  'Rossum' API Support


  • CHANGED 'Excel' to 'Excel Basics'
  • DROPPED The 'User Module' obsoleted by the plugin system


  • CHANGED Re-fixed duplicate line feed when pasting using 'TextInput'. 
  • CHANGED Improved 'JSON Select' to select a data 

New Features
  • ADDED SQL support: MySQL, MSSQL, Oracle
  • ADDED ‘REST API’ action for RESTful API support.
    User can integrate their bot with various external REST API servers.
  • ADDED ‘JumptoStep’ to ‘Verifications’ group and ‘Dialogue’ action.
    With the ability to jump between steps, users can design workflow more freely.
  • ADDED ‘JSON Select’ for JSON data format support of SQL, REST API actions


  • FIXED Removed the duplicate Line Feed when pasting sentences using ‘TextInput’
  • FIXED An issue where the value of 'UserVariable' could not be edited in TextInput.
    User can add(edit) an index to the array variable.
    ex) Original value ‘{{Global.second}}’ could be re-written like ‘{{Global.second.index}}’ to specify the index of array variable.


  • CHANGED Version mismatch alert type between PAM and STU from a countdown pop-up to a simple information popup.
    User can close the window more faster.


  • FIXED: RunProgram fails to execute if the file path contains more than one space.
  • FIXED: Run OpenBrowser chrome with actual chrome's language settings.
                           ( Bug fixed - The language in the field when accessing the site is displayed in a different language from the scenario. )
  • FIXED: Fixed to save a file with .xlsx extension in 'My Document'
                            when specifying only filename instead of writing full path to file name when do 'write' operation in Excel.
                            ( ex ) filename.xlsx
  • CHANGED: Improved 'Excel' action performance 
                            When read / write, the method of opening and processing the Excel file for each item in the Excel operation is opened and processed once.
  • CHANGED: When you run Excel Read, the cell reads as the formatted value.
                          If formatting is applied to the cell at the time of Excel Read, it is corrected to read the formatted value.
                         ( ex )  Displayed cell value: 100 (format: %) => 'Read' as '100%'

'R19.0226' is the public release name.

Previous being used 'R19.0218' is the alpha version for internal testing.


  • Package name: R19.0226.10
  • CHANGED the links of 'Movie' menu
  • CHANGED 'Sign-In' screen from IE to Chrome
  • CHANGED 'Main menu'
  • Changed 'User variables setting' to 'User variables in Scenario' and moved it to 'Settings' menu
  • Moved the Recored related sub-menus to 'RUN' menu
  • Moved 'Options / SMTP' to 'Settings' menu
  • Added 'About ScenarioStudio' to check out the current version easily
  • CHANGED 'Test run' to run in user-specific folder
  • ADDED License checking logic in the closed network environment (On-Prem Only)


  • Package name: R19.0218
  • CHANGED Dropped 'Administration' permission for running PAM
  • CHANGED a schedule time based on UTC
  • CHANGED 'Test run' results file location to user-specific folder
  • CHANGED 'TextMatch' to use a variable at 'text' parameter
  • CHANGED SendEmail, If you specify a folder in the attachment, the file in the folder will be attached. (not included a sub folder)
  • CHANGED a mouse button action when LEFT-RIGHT button setup is swapped 
  • FIXED a schedule time calcuration logic 
  • FIXED 'SelectWindow' title would fail when it contained a regular expression symbol (ex. +).
  • FIXED a bug where SendEmail contained a blank address if there was a semicolon (;) at the end of the email recipient.


  • Changed the specific version name format: R18.<release date>



  • Click action integrated with SelectWindow
  • Changed the default delay to 500ms between actions.


  • Fixed a bug of TypeKeys (interval time issue)
  • Fixed a bug where Repeat action behavior would run once when the time exceeded 32768 seconds.
  • Fixed the problem that the item is specified incorrectly when using goto in Dialogue event (jump, backjump not yet developed)"
  • Fixed theme related UI issues



  • Crash due to 'Shortcut Key' event hooking 
  • Fixed an error when adding an new Action to an older scenario with no Item name



  • Add TextMatch verification function
  • Index can be used in LocateImage - image index
  • Index can be used in LocateImage - Loop matching image


New Features

  • Enhanced Excel Action
  • Ability to use Scenario Studio as license file without login (for on-Prem or closed network)



  • Modify license purchase / authentication / activation function

How to update STU & PAM

How to update of STU & PAM

  1. Run STU 

    If your STU (Scenario Studio) is running, please, stop it including 'Scenario Studio Launcher' in tray menu.

  2. Do update of STU when shows up a popup

    About STU updating, it will takes about 2~3 min to create a runtime environment in your PC at first run.

  3. Do update of STU when shows up a popup.
    If the sign-up windows of STU appears, please, close it first and terminate STU launcher at tray menu.

  4. Check out the version of STU and PAM

    Location of version information

    STU: You can find a version in 'Help > About Scenario Studio' menu.

    Or, Select 'Windows Key > Settings > App & Features' and input 'ARGOS' in the search box.

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