diff -r e12228fd8773 -r fc91d3718b74 controls/PouInstanceVariablesPanel.py
--- a/controls/PouInstanceVariablesPanel.py	Thu Nov 15 23:04:41 2012 +0100
+++ b/controls/PouInstanceVariablesPanel.py	Thu Nov 15 23:32:54 2012 +0100
@@ -272,7 +272,7 @@
                 if infos["class"] in ITEMS_VARIABLE:
                     var_path = "%s.%s" % (self.InstanceChoice.GetStringSelection(), 
                                           infos["name"])
-                    self.ParentWindow.OpenGraphicViewer(var_path)
+                    self.ParentWindow.OpenDebugViewer(infos["class"], var_path, infos["type"])
             event.Skip()
         return GraphButtonCallback