Createblip bug MTA 1.4

function WantMech_func ( player )
local pname = getPlayerName(player)
local x, y, z = getElementPosition ( player )
local location = getZoneName ( x, y, z )
	if laGetElementData (player, "needMech") == false then
		mechanik_blip[player] = createBlip (x, y, z, 0, 2, 0, 0, 255, getRootElement() )
		setElementVisibleTo ( mechanik_blip[player], getRootElement(), false )
        for index, thePlayer in pairs(getElementsByType("player")) do
                if(isMechaniker(thePlayer)) and (isMechanikerDuty(thePlayer)) then
					setElementVisibleTo ( mechanik_blip[player], thePlayer, true )
                        outputChatBox("Der Spieler "..pname.." benötigt einen Mechaniker in "..location.." ", thePlayer, 200, 200, 0)
						setTimer ( delete_mech_blip, 60000, 1, player, thePlayer)
						laSetElementData (player, "needMech", true)
						outputChatBox ( "Du hast einen Mechaniker angefordert!", player, 0, 150, 0 )
                end
        end
	else
		outputChatBox ( "Du hast bereits einen Mechaniker gerufen. Warte 30 Sekunden.", player, 150, 0, 0 )
	end
end
addCommandHandler("mechaniker", WantMech_func)