[Zope] problems creating a Contents management tab

[Bob Shelton]

i have a python product and i am trying to create a contents
management tab.  the product inherits from ObjectManager
and the module imports ObjectManager from OFS.ObjectManager

these lines of code do not work...

    manage_options = ({'label':'Contents','action':'manage_main'},
                      {'label':'Edit','action':'editForm'},
                      {'label':'View','action':''},)+RoleManager.manage_options\
+Item.manage_options

    manage_main = ObjectManager.manage_main

i get this error:
Error Type: AttributeError
Error Value: 'string' object has no attribute 'has_key'

can anyone help?

thank you in advance.

-bob