Hover Captions problems

hi,
I tried to build little tooltips, like in this great tutorial:

http://www.kirupa.com/developer/mx/captions.htm

but I was wodering, that it didn´t work. I think that my problem is, I want to use this tooltip inside of a MC, and there is a problem with the path…

I tried to change it, but it didn´t work. Can anyone explain me how to change the script, to use it inside a movieclip?

it would be great

thanx