diff --git a/Rs.DeweyTester/FormMain.cs b/Rs.DeweyTester/FormMain.cs
index 6b283d2..a9e0795 100644
--- a/Rs.DeweyTester/FormMain.cs
+++ b/Rs.DeweyTester/FormMain.cs
@@ -732,6 +732,7 @@ namespace Rs.MotionPlat
             {
                 SysConfigParam.Update("GrrProductNum", txtGrrProductNum.Text);
                 SysConfigParam.Update("GrrTestNum", txtGrrTestNum.Text);
+                GlobalTray.GrrTray.ChangeStatus(ESlotStatus.NotHave);
                 for (int i = 0; i < GlobalVar.GrrProductNum; i++)
                 {
                     GlobalTray.GrrTray.ChangeStatus(i + 1, ESlotStatus.Have);