Hello! | javax.faces.el.EvaluationException: Cannot get value for expression '#{messageList.rowCount==0} | This is not the real exception but the one that came out of the application stack. I assume the real problem is that you are trying to execute a sql query through the entity manager instead of defning entity beans and using EJBQL. You can use bare SQL but then you have to inject a datasource into your session bean using the @Resource annotation. Regards Felix View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4009697#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...