[Zope] ZSQL in Products

Hello, A newbie question. Some ZSQLs work properly if the application is created in a Zope tree. The same methods become unaccessible (login/passw window appears) if a Product created from the code and the application is an instance of the product. What permission and where must be set? THX in advance. -- Best regards, Alexander N. Chelnokov Ural Scientific Institute of Traumatology and Orthopaedics 7, Bankovsky str. Ekaterinburg 620014 Russia ICQ: 25640913