2 f-curves with 1 button

i am making a blender game and if i press my right mouse button
i can zoom(f-curve)
but how can i make when i press right butten again that it will play a f-curve so it go’s back

Progress: http://www.youtube.com/watch?v=uoWAIc3HF7A

use the Ping Pong mode instead of Play in your FCurve actuator. If you want the zoom to be on while you press the mouse and to go back to normal once you release it then you should use the Flipper mode.

over 9000X
thank you!