Well I read that you can't use parameters with invokeMethod. So I tried with Expressions.createMethodExpression : MethodExpression<Employe> me = Expressions.instance().createMethodExpression( | "#{coreServiceEmploye.saveEmploye(employe)}", | Employe.class, | new Class[]{Employe.class}); | employe = me.invoke(employe); But still the same problem, employe parameter is null in coreServiceEmploye.saveEmploye method. I really can't understand why. Anyone has an idea ? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4120436#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...