Script question

[shareck]

Hi. I've made a model that uses pistons controled with frame timed scripts. Is there a way that the sequence could be initiated with the press of a button and do not repeat untill the button is pressed again, instead of just going all the time, over and over again?
something like: if(press the buttn)than(do tehe sequence)
There's alink to this model http://sketchup.google.com/3dwarehouse/details?mid=cd90a0017123bf487a6a01149be78798 its a autoloader for tank gun. What i want to achieve is to have the system reloading the cannon after pressing fire (firing the cannon)
Thanks
By the way, check the video of my latest sketchyphysics 3 tank: http://www.youtube.com/watch?v=OwXMBCPW-W4

[Wacov]

Sorry, I don't know any way... maybe there is an adaptation of [1,2,3,4][(frame/50)%4] that changes when you press something. Variables need to be refreshed every frame, so no luck there... why not just use an emitter?

(Your tank is awesome BTW )