diff -r 8b45d8494fae -r 95fe62bfe920 editors/Viewer.py
--- a/editors/Viewer.py	Fri Aug 27 11:31:32 2021 +0200
+++ b/editors/Viewer.py	Mon Aug 30 09:39:23 2021 +0200
@@ -389,8 +389,8 @@
                 elif var_name.upper() in [name.upper() for name in self.ParentWindow.Controler.GetProjectPouNames(self.ParentWindow.Debug)]:
                     message = _("\"%s\" pou already exists!") % var_name
                 elif not var_name.upper() in [name.upper() for name in self.ParentWindow.Controler.GetEditedElementVariables(tagname, self.ParentWindow.Debug)]:
-                    print(values) 
-                    self.ParentWindow.Controler.AddEditedElementPouExternalVar(tagname, values[2], var_name, description=values[4])
+                    kwargs = dict(description=values[4]) if len(values)>4 else {}
+                    self.ParentWindow.Controler.AddEditedElementPouExternalVar(tagname, values[2], var_name, **kwargs)
                     self.ParentWindow.RefreshVariablePanel()
                     self.ParentWindow.ParentWindow.RefreshPouInstanceVariablesPanel()
                     self.ParentWindow.AddVariableBlock(x, y, scaling, INPUT, var_name, values[2])