انا عملت الكود دا لما تيجي تدوس على  button اسمها Engine On / Off المحرك  بتاع السيارة بيطفا و لما دوس كليك عليه تاني بشتغل المحرك بس الكود دا فيه غلط علشان خرب لوحة السيارة 
 
addEvent( 'VehiclesSystem;off/onPersonalVehicle', true )
addEventHandler( 'VehiclesSystem;off/onPersonalVehicle', root,
function switchEngine ( playerSource )
    local theVehicle = getPedOccupiedVehicle ( playerSource )
    -- Check if the player is in any vehicle and if he is the driver
    if theVehicle and getVehicleController ( theVehicle ) == playerSource then
        local state = getVehicleEngineState ( theVehicle )
        setVehicleEngineState ( theVehicle, not state )
    end
end
end
)
	الأصلي 
 
function turnEngineOff ( theVehicle, leftSeat, jackerPlayer )
    -- if it's the driver who got out, and he was not jacked,
    if leftSeat == 0 and not jackerPlayer then
        -- turn off the engine
        setVehicleEngineState ( theVehicle, false )
    end
end
-- add 'turnEngineOff' as a handler for "onPlayerExitVehicle"
addEventHandler ( "onPlayerVehicleExit", getRootElement ( ), turnEngineOff )