Custom Script for Previewing another Airtable record

Hi all!

I’m looking to use the URL Preview App to preview another bases’ record.

I can successfully open the source record from another base, but I’m looking to preview that view and make edits within that preview window instead of being sent to that original record in a new window.

Currently it’s not working when I select the URL field, I’m met with the “No Preview” message. I believe instead of choosing the option to Preview a URL (even though that’s what I want) I would actually need to be selecting the option to Run Script - but not sure what the build is for that custom option.

Any help is much appreciated! Screengrabs of what is happening vs what I’d like possible attached.