The problem is in your aspect code: | @Aspect | public class MyAspect | { | @Mixin (target=MyPojo.class, interfaces={MyInf.class}) | public static MyMixin createMyMixin() { | return new MyMixin(); | } | } | The createMyMixin method must receive the pojo as an argument. Just replace your aspect by this new one. | @Aspect | public class MyAspect | { | @Mixin (target=MyPojo.class, interfaces={MyInf.class}) | public static MyMixin createMyMixin(MyPojo pojo) { | return new MyMixin(); | } | } | View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3990769#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...