[Zope] Determining Local Roles

Hello all, I have a stumper here. I am using the following code to determine the permissions of users from AccessControl import getSecurityManager user = getSecurityManager().getUser() if user.has_permission('Change DTML Documents', ob): This piece of code appears to detect appropriate permissions if the user is set up in an acl_users folder however, this piece of code does not appear to work at the "local role" level. That is to say that if I give "Jo" permissions to change the "index_html" document, the above code does not see "Jo" as having permissions to do so. Is there any way to detect the permissions at the local role level? Eric