Replace "period" with "comma" in column CSV

Hello again friends, I have a small problem. I need to replace the dots with commas in a specific column(F) in a CSV file

I tried as follows:

(CurrentRow(“F”) Is CurrentRow(“F”).ToString().Replace(“.”, “,”)).ToString()

however I get the error: Assign: Expression Activity type ‘VisualBasicValue`1’ requires compilation in order to run. Please ensure that the workflow has been compiled.

This is a common error related to using the Windows compatibility mode. I believe it’s the kind of double quotes you’ve used.

Now i have this problem

Assign: Column 'F
’ does not belong to table DataTable.

@gustavo.souza make sure “F” is column name and their is no space in beside column name