diff --git a/Rs.SkyLine/Flow/SubFlow/LaserFlow.cs b/Rs.SkyLine/Flow/SubFlow/LaserFlow.cs
index 1f9cbec..2b18d77 100644
--- a/Rs.SkyLine/Flow/SubFlow/LaserFlow.cs
+++ b/Rs.SkyLine/Flow/SubFlow/LaserFlow.cs
@@ -210,7 +210,7 @@ namespace Rs.MotionPlat.Flow.SubFlow
             if (trayType == ETrayType.Test)
             {
                 //HasProduct = Math.Abs(Math.Abs(TestHeight1 - TestHeight2) - GlobalVar.TestFixtureTrayOffsetHeight)>0.6;
-                HasProduct = TestHeight1 - TestHeight1 < GlobalVar.TestFixtureTrayOffsetHeight - 0.3;
+                HasProduct = TestHeight1 - TestHeight2 < GlobalVar.TestFixtureTrayOffsetHeight - 0.3;
             }
             else if (trayType == ETrayType.Turnover)
             {