[Zope] user permission on folder documents

[Winnie Au]

Hi there,

I want to create an admin page for supervisor to grant permissions to fellow
workers in a matrix type screen. What I have done is created a list of users
underneath top folder, then created a list of projects and assigned
permission for update to different roles. So in the codes, I tried to loop
through all the users, then find out the permission for every projects, but
doesn't seem to pickup the user within the second loop.

<dtml-in "WebDevelTest.acl_users.getUserNames()">
looping user: <dtml-var sequence-item><br />
   <dtml-let userName=sequence-item>
  
      <dtml-in "WebRoot.objectValues('Folder')">
         in folder: <dtml-var id> access allowed?
            <dtml-if
expr="acl_users.getUser(userName).has_permission('Change DTML Document',
this())">
               Yes
            <dtml-else>
               No
            </dtml-if>
		<br />
      </dtml-in>
   </dtml-let>
</dtml-in>

Thanks in advance.

Cheers,
Winnie