Thanks for the pointer ... I made some progress, I think. Before I had my plain MBean registered and invokable. Now, trying to use it as an XMBean, I have some kind of MBean registered which is not my class, and it has no methods/parameters to invoke/change. I had expected it to just be like a wrapper to my class ... instead it is an empty wrapper ... Any idea what step I missed? I'm not sure I understand how it should work but I am expecting the XMBean to inherit everything from my MBean. Here is my code: work.MyClass mBean = new work.MyClass(); ObjectName objectName = new ObjectName("mydomain.com:job=MyJob,id=" + System.identityHashCode(mBean)); XMBean xmbean = new XMBean(mBean, XMBeanConstants.STANDARD_MBEAN); ModelMBeanInfo minfo = new ModelMBeanInfoSupport("work.MyClass", "Uninitialized XMBean", new ModelMBeanAttributeInfo[0], new ModelMBeanConstructorInfo[0], new ModelMBeanOperationInfo[0], new ModelMBeanNotificationInfo[0]); minfo.getMBeanDescriptor().setField(ModelMBeanConstants.PERSIST_NAME, objectName); minfo.getMBeanDescriptor().setField(ModelMBeanConstants.PERSIST_POLICY, "OnUpdate"); minfo.getMBeanDescriptor().setField(ModelMBeanConstants.PP_NEVER, "false"); minfo.getMBeanDescriptor().setField(ModelMBeanConstants.PERSISTENCE_MANAGER, "org.jboss.mx.persistence.DelegatingPersistenceManager"); xmbean.setModelMBeanInfo(minfo); server.registerMBean(xmbean, objectName); invokeStringMethod(objectName, "setAStringObject", myStringObject); View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3981264#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...