Reply To: Removing End of Line Underlines

I’m a little late to this party but this is exactly the sort of script I was looking for (I think!), but I can’t seem to get it to work!
It creates the NoUnderline character style, but then, does nothing else.

I am not good with scripts so I’m not sure what I’m doing wrong. I’m not getting an error.

My underlines are a paragraph style.
I can manually apply the new NoUnderline style which works, but obviously I could have done that without the script.

Just to confirm, what I’m wanting is to remove underlines on trailing white space at the end of a line (not a paragraph)..