Pop up boxes after signing a PDF

[Big24044893pof0]

Hello, I think I may know the answer to this question, but I'll ask away.  I have a from set up with multiple text fields.  These fields are multi line and scrollable.  I've set up the following script in the Validate tab so a pop up box shows the scrolled text in the field:  "event.target.userName = event.value;".

Once someone signs the document, the pop up box no longer appears.  Does that script become nullified upon signature?  Is there any way to have the pop up boxes continue to show once a document is signed?  Thanks for your help!

[Karl Heinz Kremer]

Once the document is signed, you can no longer edit the form fields, and therefore the validate script will no longer run. You will need to find a different way to to trigger the display of the full text. This can be done e.g. with a button. That would still work after the documents is signed. 

[Big24044893pof0]

Thank you.  I have an idea in mind of what I would like to see happen but not sure if it's possible in Acrobat.  Can you point me to some sources on programming buttons to show full text in fields?  Thanks.