private void checkHasCarIn()
        {
            if (Visibility != Visibility.Visible)
            {
                checkTP.stop();
                return;
            }
            bool hasCarIn = MS2.IfHasCarIn();

            if (Visibility != Visibility.Visible)
            {
                checkTP.stop();
                return;
            }
            if (hasCarIn == false)
            {
                if (nextStep == null)
                {
                    TH.addOnceUI(BackExit.Exit);
                }
                else
                {
                    TH.addOnceUI(nextStep);
                }
                checkTP.stop();
            }
        }