Alan Beasley had a problem with showing and hiding a visual element on the Phone touch interface and when he finally found the solution, he decided to share it with you.
Basically if you have situation where you need to either show or hide a visual element, you need to know what State you are in. As you can’t attach 2 different Triggers (Behaviours) to the same element, & expect to activate/fire them in an alternating manner with the same action (i.e. a mouse click). Blend will only ever fire one & continue to fire the same one. (The closest in the Z order i presume…) And my first thought was, that i needed some code to determine what state I was in. But you don’t!