addEventHandler("onPlayerSpawn", root,
  function()
    local sid = getElementData(source,"player:sid") --- To jest ta linijka 
    if not sid then
      return
    end
    if (getElementData(source, "plec")>0) then
      return
    end
    setTimer(triggerClientEvent, 3000, 1, source, "evc", resourceRoot, "wlacz_okno",true)
    --triggerClientEvent(plr,"evc",resourceRoot,"wlacz_okno",true)
  end
)