From edac36d4df2a21fa658b735bd8b5ca3ec6518f2f Mon Sep 17 00:00:00 2001
From: "Zheng, Lei" <realthunder.dev@gmail.com>
Date: Sat, 25 Apr 2020 18:30:07 +0800
Subject: [PATCH] gui: improve backward compatibility

---
 freecad/asm3/gui.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/freecad/asm3/gui.py b/freecad/asm3/gui.py
index 61fe3a4..3cf62be 100644
--- a/freecad/asm3/gui.py
+++ b/freecad/asm3/gui.py
@@ -103,7 +103,9 @@ class SelectionObserver:
         hasSelection = FreeCADGui.Selection.hasSelection()
         for cmd in self.cmds:
             cmd.onSelectionChange(hasSelection)
-        FreeCADGui.updateCommands()
+        update = getattr(FreeCADGui, 'updateCommands', None)
+        if update:
+            update()
 
     def addSelection(self,docname,objname,subname,_pos):
         self.onChange()