Advancing timeline using arrow keys

Good morning all,

I am creating a movie for my kids so they can learn their ABC’s. I have created the movie layout and have the letters change via shape tween. Now I am having problems with the AS. I know how to get the movie to advance using the arrow keys frame to frame but I need it to go from fram 1 to 15 then stop. I tried nextLable but it didn’t work. I have searched the site and forum but haven’t seen anything that might help.

Can anyone advise me on how to create this timeline control? Like I had said I need the action scripting that will allow me to advance my movie 15 frames at a time in both directions.

Thanks in advance,
Task