Brilliant! Thank you! That works great and it really helped me understand the problem.

I love discussion boards like this. I really appreciate the help.

++bronson

Hi - thanks in advance for any help. I'm relatively new to expressions. I'm trying to do something that I realize I could easily do using simple keyframes ... but at this point what I'm trying to do is turning into an expressions lesson. I'm trying to control the opacity of two layers using a null l...