[Zope] acl_users.getUserNames()

Hi! I'm sort of a newbie at this, so I would be most greatful for any help I can get. I have made a CMF-object in Zope, where I have added sume users in the "acl_users"-folder. When I try to log in by the url (I.e. http://zopehost:8080/the_CMF_Object/?__ac_name=some_username_in_the_acl_user s_folder&__ac_password=some_password ), this works fine. It seems as if I am logged in, but when I try to run a dtml-script: <dtml-in "acl_users.getUserNames()"> <dtml-var sequence-item> </dtml-in> I have to log in as an administrator to see the output of that dtml-script. Why can't I see the output when I'm logged in the CMF-object? Thanks, Espen Berge