After looking at this: Hook Faces Application.createValueBinding / createMethodBinding so that the Expression Language enhancements are available to all bindings created http://jira.jboss.com/jira/browse/JBSEAM-1309 It appears that if I use JBAS4.2 and Seam from CVS I should be able to do the following from my facelets page: <h:panelGroup layout="block" rendered="#{myAction.myMethod(myArg)}"> where the 'rendered' attribute expects a boolean value and myAction.myMethod(myArg) returns a boolean. I just want to verify that my understanding above is correct before I spend a bunch of time upgrading. Thanks View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4047676#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...