Rifle Headshot Problem

addEvent "onPlayerHeadshot" 
    addEventHandler("onPlayerDamage", getRootElement(),
	if vioGetElementData ( player, "rang" ) >= 4 then	
        function (weapon, bodypart, playerrang) 
            if weapon == 33 then 
                local result = triggerEvent("onPlayerHeadshot", source, attacker, weapon)
                    if result == true then
                        if isEvil( player ) then
                            if bodypart == 9 then
                                killPed(source, attacker, weapon, bodypart)
                            end
                        end
                    end
                end 
            end 
        end 
    end    
)^^