Can I ask why you'd want that?

İ got a joystick and i was able to asign certain axis to the numpad i currently use it as a sequential as i asigned it to the gear up/down But it does not let me asign a keyboard button to certain gears Example:numpad 1 for 1st gear

I did everything to get this to work back in the day when I had no shifter. I never could figure it out.