this is what the ‘set table row’ behaviour does.
The best way to understand what you can use this form is to set up a simple test form. start with a simple process (ie run the form, enter data into the table for say 2 or 3 rows in a text field, then invoke your SetTableRow script from a button and do something simple like ‘set field’ as the ‘action’ to change the text in the row to something else and see how it iterates through the row. Do this by using the DEBUG option in the Forms area – under where also can Form | Preview.. Debug is below and you will see the script run as you invoke to help you see how it is working.
understand the basic concept at this simple level then a lot easier to then use that knowledge in more complex scenarios