typing error.

Venus/Venus_RT/Modules/LLs/LLEntity.cs

@@ -108,7 +108,7 @@ namespace Venus_RT.Modules
             _purgeRoutine       = new MFPurgeRoutine(_JetTM, Module);
 
 
-            var _slotNumber = SC.GetValue<int>($"{module.ToString()}.SlotNumber");
+            _slotNumber = SC.GetValue<int>($"{module.ToString()}.SlotNumber");
             WaferManager.Instance.SubscribeLocation(Module, _slotNumber);
 
             InitFsmMap();