I suspect that the reason nobody has responded to your post is that they don't know the answer.  So don't feel bad.  I say this because I just discovered Finalescript myself, and have just begun to explore it's potential.  I suspect that it is very limited.  It's MakeMusic's attempt to include it's own macro feature.  The little bit I've read leads me to believe that it was quite quickly added to the program the first year (2004) it was offered, and they haven't done anything, or little, to it, since.  (Not to sound too cynical.)  I am still working with 2004, and am finding it does only basic things, and not the more sophisticated gestures like learning keystrokes.  The documentation is very sparse and cryptic.  We are pretty much on our own.

Good luck!

Bob M.