When copying an Excel cell content with Ctrl + C, a new line (hidden character) will append automatically at the end of the copied content as below screenshot shown.
If you want to use the cell content in the next action or plugin as a variable, you have to remove the new line break character. Please, do as follows.
Create a user variable to save a cell content, Settings > User variable in Scenario .
I defined '{{g1,v1}}'.
Add 'SetVariables' and set 'Clipiboard' value to your previous defined variable,
Bot: sample-excel01.zip