Animated graphic as button over state

It’s me again. I’m creating a header with navigation built in, and I have an animation in my library that, right now, has the behavior of ‘graphic’ and on the button over state I want the graphic to play. So far I’ve tried to simply place the graphic on the keyframe for the ‘over’ state, but it only shows the first frame as a stationary graphic. I’ve made sure the instance of the graphic is ‘play once’ not ‘single frame’ but it didn’t make a difference. I’m a beginner, but I try and things like this frustrate me. I might be going about it wrong, there’s something I’m not doing, but I can’t figure it out. So if someone who can forgive my newbie ways could offer me a tidbit, I would love them.