This is a really nice action but there is one thing that can go wrong with it.
If you want a reusable text field, you won't be able to clear the line return it puts in the text field. (Changing the string back to empty doesn't fix it) The user has to manually use backspace.
It would be amazing if the return character for it could be made not to go into the text field, but so far I can't find a way in playmaker.