Thanks so much for helping!
It doesn’t need to match its pair so the first script is fine.
So I include text.sourceText and then paste the script straight after that I presume?
I’m getting warning: property or method ‘Index’ in Class ‘global’ is missing or does not exist. It may have been renamed, moved, deleted, or the name may have been mistyped.
It will need to end on the desired end title, so I’ll be able to just keyframe near the end with a-non GCAT letter and it will override the script? Or do I need to put that on a different layer?