Button to reverse tween to a stop

I have seen a lot of different ways on the net to play tweens backwards, most common is the prevFrame(); command I find.

The only trouble is I have a tween that has keyframes that stop. So I need to find out how to have a prev button that plays the tween inside an mc backwards to either a stop command or a designated frame number set in the button itself.

Does anyone know of any tutorials or can give me some insight as to how to go about it?

– Nate