How can the controller class of Tiles get the attribute of other Action class?

[Daniel PC Leung]

I have the following controller class.
I would like to change the parameter of
createMenuItem dynamically based on the 
user group after login.

How can the controller class of Tiles get the attribute of
of other Action class?

Thanks

public class MyMenuAction implements Controller  {
        private MenuItem createMenuItem (String label, String link) {
            SimpleMenuItem item = new SimpleMenuItem();
            item.setLink(link);
            item.setValue(label);
            return item;
          }
          private List getLinks() {
            List list = new ArrayList();
            list.add(createMenuItem ("Option1", "/option1"));
            list.add(createMenuItem ("Option2", "/option2"));
            list.add(createMenuItem ("Option3", "/option3"));
            return list;
          }

          public void perform (ComponentContext context,
                               HttpServletRequest request,
                               HttpServletResponse response,
                               ServletContext servletContext)
                        throws ServletException, IOException {
            List items = (List) getLinks();
            context.putAttribute ("items", items);
          }
}

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