ok, I look the jboss-seam-ui.jar/META-INF/*.taglib.xml for an example Again, thanks a lot petemuir for your help View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4044731#4044731 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4044731