Ok. After some investigations I'm sure, something is wrong in VPE when it is used <ui:param ...> What do you think guys? View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4230611#4230611 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4230611