Hi, I've been stuck with this problems for weeks... I posted an earlier question bug got no replies, so I thought I'd try again. I have a product that is used as a mix-in class in several other products. This product adds a management interface screen and I want to define permissions to control that screen in this class. So, I do: class Publisher(RoleManager): __ac_permissions__ = ( ('Change publishing', ('manage_publish')) ) manage_publish = HTMLFile('publish', globals()) In the product that uses this class: class Something(Folder, Publisher.Publisher): __ac_permissions__ = ( ('View management screens', ('manage_tabs', 'manage_main', ....)) ..... ) manage_options = ( {'label':'Edit', 'action':'manage_main'}, {'label':'Publish', 'action':'manage_publish'} ) Now, I think this should work... that's how it's done in AccessRole.Role.RoleManager - it defines __ac_permissions__ that get added to the classes that inherit from it. But it doesn't work for me... the permissions defined in Publisher don't appear anywhere. Any idea why, or what I'm doing wrong? Thanks Itai -- Itai Tavor -- "Je sautille, donc je suis." -- itavor@vic.bigpond.net.au -- - Kermit the Frog -- -- "What he needs now is understanding... and a confederate victory" -- -- Dr. Jacobi, Twin Peaks --