Mouse Buttons / Mouse Wheel not working?

SetTitleMatchMode 3
#If WinActive("Wing Commander Saga")
{
	; Middle Button
	; Match Speed
	$MButton:: SendInput {m}
	
	
	; First additional Button
	; Drop Countermeasure (repeat as long as pressed)
	$XButton1::
		Loop
    	{
			if not GetKeyState("XButton1", "P") ; If XButton1 is not pressed anymore then break the loop
				break
			else 
				SendInput {x}
			
			sleep 1
		}
		return
	
	
	; Second additional Button
	; Transfer weapon energy to shilds (repeat as long as pressed)
	$XButton2::
		Loop
    	{
			if not GetKeyState("XButton2", "P") ; If XButton2 is not pressed anymore then break the loop
				break
			else 
				SendInput {n}
			
			sleep 1
		}
		return
	
	
	; Mouse Up
	; Increas throttle by 5%
	$WheelUp:: SendInput {Numpad7}
	
	
	; Mouse Down
	; Decrease throttle by 5%
	$WheelDown:: SendInput {Numpad1}
}