Open windows worksheet with specific filter.

I want open the window EB worksheet with a specific filter build by my code.

I try this code without success.

            Worksheet ws = PlugIn.EB.Folders.Messages.OpenWorksheet(WorksheetSystemLists.Messages);



            ws.Filter.Add(AttributeId.UserNameCreate, BinaryOperator.Equal, "JCO");

            ws.Refresh();

Filter.add send an exception not possible for this object.