Animating armetures

I am working on a simple alarm clock. I have a single bone armeture that I have rigged to modify the button. But when I try to animate it dosent work. Is there a different way to do it? do I need more bones? If my meathod wont work how would you animating changing the verticies manualy? file included.

thanks :smiley:

Attachments

AlarmClock.blend (483 KB)