Hold down button until button pressed

[josef]

Hello,

I'm looking for a way to create a script that'll let me basically do this:

I want to be able to press down Numpad1 and when I do this, I want it to hold down RMB (so I can basically continue to aim down my gun). I want it to loop until I press Numpad2 (or preferably Numpad1 again). I'd appreciate it if you could help me with this.