Well, I got it to work, sorta. In the current form, the bulge script isn't very amiable to use with a TkInter slider. The problem is that as the slider is moved (either direction), each step of the slider is acted on and the effect is cumulative. I was using a hair prop as a target. It was kinda funny watching it grow to a point where it looked like the poor P4NF figure was being attacked by the hairball from hell. ;-) I'll tinker with it some but it looks like a full re-write of the logic flow is necessary.