It seems like it on registers the on touched trigger while playing it on a phone and ignores the Is in touch event.
Edit:
Nope, the problem was that you used Mouse.X and Mouse.Y in your expression. And since touch devices like phones don't have mouses it couldn't get it's coordinates. Replacing those with Touch.X and Touch.Y solves the problem. Here's a fixed version: https://dl.dropboxusercontent.com/u/166 ... wPath.capx