In Seam 1.2.1GA I was not using jboss-el, and I had a value expression passed to a facelet source tag that looked something like this: | value="#{not empty f.expression ? f.expressionValue : f.componentProperty ? value[f.component][f.property] : value[f.name]}" | Now with Seam 2.0B1 (and the new Jboss-el) this gives me an error: | Illegal Syntax for Set Operation | when the form is submitted. Should I factor this out into mutliple separate simpler expression and put the conditional logic elsewhere? Or is this a limitation that we expect to be lifted at some point? Cheers J View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4059470#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...