APEX

I am trying to reorganize the navigation in my application to be based on user roles rather than functional areas. There are Tabs set for each functional area I am using now, and I have created new tabs for the user roles. Some of the reports may be accessed by users having different roles, and I would like the breadcrumb to reflect their default Home page, rather than be static. The problem is that it doesn't appear that I can create multiple breadcrumb entries that apply to the same page at all.

I tried going through Dimitri's blog
http://dgielis.blogspot.com/2008/03/dynamic-breadcrumb-in-apex.html
for creating dynamic breadcrumbs, but the result I get is that the breadcrumb is always missing the child entry.

Has someone been successful in using conditional or dynamic breadcrumbs and can help me out? I created two application items that hold the page number and page name of the user's default home page that should be the root for all the breadcrumbs and I can reference these. My challenge is that I can't get any of the child references to appear.

The breadcrumb on the child page is set up as follows:
Parent Entry: - Select Parent -
Short Name: &AI_PARENT_PAGE_NAME.
Target Page: &AI_PARENT_PAGE.

AI_PARENT_PAGE_NAME and AI_PARENT_PAGE are application items that are set BEFORE HEADER (IF NULL) using a lookup from the APEX_ACCESS_CONTROL table (to get their username/id).