LFS Forum - InSim Siren Sign

I have been puzzled for ages on how to script

I want to make a command !siren and then a siren sign pops up on the screen with the distance of the siren, I had use a little example of the sign telling to turn right out of pit:

        // OnScreen Effects 500ms (.50 milliseconds)
        private void OnScreen_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
        {
            try
            {
                foreach (clsConnection Conn in Connections)
                {
                    if ((Conn.PlayerName == HostName && Conn.UniqueID == 0) == false)
                    {
                        #region ' OnScreen Effects '
                        if (Conn.OnScreenExit > 0)
                        {
                            if (OnScreen == 0)
                            {
                                InSim.Send_BTN_CreateButton("^7›› ^1PIT EXIT ^7››", Flags.ButtonStyles.ISB_DARK, 20, 50, 40, 77, 10, Conn.UniqueID, 2, false);
                            }
                            else
                            {
                                InSim.Send_BTN_CreateButton("^1›› ^7PIT EXIT ^1››", Flags.ButtonStyles.ISB_DARK, 20, 50, 40, 77, 10, Conn.UniqueID, 2, false);
                            }
                        }