private bool AddLed(int cardNum)
        {
            int key = cardNum;

            if (!Leds.ContainsKey(key))
            {
                if (EQ2008.User_OpenScreen(cardNum))
                {
                    Leds.Add(key, "OPEN");
                }
            }
            else
            {
                if (Leds[key] != "OPEN")
                {
                    if (EQ2008.User_OpenScreen(cardNum))
                    {
                        Leds[key] = "OPEN";
                    }
                }
            }

            return(Leds.ContainsKey(key) && Leds[key] == "OPEN");
        }