How do I use the record button in AppleScript?
Apparently, the Message system is not recordable in MacOS AppleScript Editor.

There is no error message, or any other feedback.  It's just a fail.
Comments from others: That being said, most people don't use that record button. You'd be better off trying Automator, or getting a utility like Keyboard Maestro that has a recording function that works better. - ChrisNorman
Very few applications are “recordable”. Messages is not one of them. Finder is one of those recordable applications. – wch1zpink