The other problem is that even if the correct type is chosen by tools (say Image), the runtime also needs to know, so JBossXB needs to see the schema annotation as well. JBossXB currently uses xerces as well (although it has an intermediary model) so whatever mechanism would have to be aplied there. It might make more sense to keep partial support, and assume certain mime types, and encourage people that need more to upgrade to JAX-WS, or use AP 1.0 instead of MTOM (which doesnt have this problem since it's in the WSDL). -Jason View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4004993#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...