ToggleControl not working

[Disy]

function disableGunOnSwitch ( prevSlot, newSlot )
	local weaponID = getPedWeapon(getLocalPlayer(), newSlot)
	outputChatBox(tostring(getPedAmmoInClip(getLocalPlayer(), newSlot)))
	if ((getElementData(source, "cf:"..tostring(weaponID)) or getElementData(source, "r:cf:"..tostring(weaponID)) or  getPedAmmoInClip(getLocalPlayer(), newSlot) < 20) and not (weaponID==2 or weaponID==3 or weaponID==4 or weaponID==5 or weaponID==6 or weaponID==7 or weaponID==9 or weaponID==15 or weaponID == 0)) then
    	outputChatBox("Should not fire")
		toggleControl ("fire", false)
	else 
		outputChatBox("Should fire")
		toggleControl("fire", true)
	end
end
addEventHandler ( "onClientPlayerWeaponSwitch", getLocalPlayer(), disableGunOnSwitch )
addEvent ( "onClientPlayerWeaponCheck", true )
addEventHandler ( "onClientPlayerWeaponCheck", getLocalPlayer(), disableGunOnSwitch )

This is the code. It should work but it doesn't. What the function should do is that it doesn't allow you to shoot when you have only one bullet left but it's not working. The conditions are working because the outputChatBox says "Should not fire" in the game but I can fire anyway. What am I doing wrong?

[Disy]

After a few tests, I noticed that it doesn't work only with the mouse click, with others keys it works correctly but I need to fix it. 

Edited April 30, 2017 by Disy