can you script the flashlight button to activate a devmode cheat like active camo?

Yes.

where would you put the dev command? in the script

Underneath the condition.

sorry i am a noob at this could u give me an example

(script startup doSomething
	(if
		([condition])
		(begin
			([commands])
		)
	)
)

or

(script startup doSomething
	(sleep_until ([condition has been met]) 15)
	([commands])
)

sorry to bother u again but this is the best i could do but is still seem to mess up when compiling.

(script startup camo
(sleep_until ([unit_get_current_flashlight_state (unit (list_get (players) 0))]) 15)
([cheat_active_camouflage])
)

but i think it should turn off after you shoot :P

Problems:
-You didn't remove the brackets. If I didn't include the brackets, people would just copy that whole thing. If I include the brackets, people fill in the stuff without bothering to remove the brackets ><

Just remove the brackets.

-You never turn off the cheat. There is no way to turn off that cheat. You'll stay invisible for the entire game, even when you shoot.

-Only works for SP and the first player in MP (won't work for any other players), as you only referenced player 0.

ok screw the whole cheat_active_camouflage thing how about using a script spawning the active camo pickup right next to the player. for single player maps