How to activate a script for X seconds with a button?

[iTzAnonymous]

i just want to make this script:
*space::
Loop
{
GetKeyState,state,space,P
if state = U
break



Send,{space}
Sleep,17
}
return

end::Exitapp

MButton::Suspend

be activated for 10 seconds after i press Mbutton
thx in advance ^^