Bad argument @ 'getElementData'

[Robis]

Hello!

I have an warning showing up in my console!

Can anyone help me fix this? 

Gamemode: DayZ

WARNING:

Bad argument @ 'getElementData' [Expected element at argument 1, got nil]

Script:

function setEngineStateByPlayer (playersource)
  ------------------------------------------------
	local parent = getElementData(veh,"parent") --WARNING HERE
  ------------------------------------------------------
    if isElement(parent) and tonumber(getElementData(parent,"fuel"))then
    if getElementData(parent,"fuel") <= 0 then
		outputChatBox("This vehicle tank is empty!", playersource, 255, 22, 0)
		return
	end
	end
	local veh = getPedOccupiedVehicle (playersource)
	setVehicleEngineState (veh, not getVehicleEngineState(veh))
	if getVehicleEngineState(veh) == true then
		triggerClientEvent (playersource, "displayClientInfo", playersource,"Vehicle","You started the Engine.",22,255,0)
	else
		triggerClientEvent (playersource, "displayClientInfo", playersource,"Vehicle","You stopped the Engine. ",255,22,0)
	end
end

Thanks!

Edited December 25, 2016 by Robis

[pa3ck]

Move line 11 before the "local parent = ....."