Go To And Play Question

hi there
I have 2 buttons… one is simply a go to and play… where the user clicks and it starts playing a frame…

Just wondering if there is something like a go to and play “in reverse”…

For example… Say there is an animation from Frame 1 to Frame 10 and from Frame 11 to Frame 20.

When the animation starts it plays frame 1 to 10… then there’s a button that when clicked, plays frame 11 to 20…

What I would like is a button that plays back frame 10 to 1.