If the action is parameterized, you can pass parameters to it. The biggest gotcha to be aware of is that the expression is evaluated when the action is invoked, which means local page state is not available. If you are trying to select one entity out of a list, then you are better off with a request parameter. I'd save the action parameters for when you want to pull related component state into an action. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4013151#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...