Thx for replying but could you be more specific and give me a simplified example? The parameter as I already mentioned in not constant. Regards, View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3989583#3989583 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3989583