--- a/controls/DebugVariablePanel/DebugVariablePanel.py	Fri Nov 04 22:11:55 2022 +0100
+++ b/controls/DebugVariablePanel/DebugVariablePanel.py	Fri Nov 04 22:14:14 2022 +0100
@@ -134,6 +134,7 @@
         # Display message if data is invalid
         if message is not None:
             wx.CallAfter(self.ShowMessage, message)
+            return False
 
         # Data contain a reference to a variable to debug
         elif values[1] == "debug":
@@ -147,6 +148,9 @@
             else:
                 self.ParentWindow.InsertValue(values[0], force=True)
 
+            return True
+        return False
+
     def OnLeave(self):
         """
         Function called when mouse is leave Drop Target