Our custom task instance subclasses the jbpm task instance, we also provide a custom hibernate mapping (again extending the one of jbpm). We created a custom TaskInstanceFactory (which creates our custom task instance) and made sure jbpm is using this one. You can set override this setting in jbpm.cfg.xml. | <bean name="jbpm.task.instance.factory" class="???.task.factory.CustomTaskInstanceFactory" singleton="true" /> | This is also described somewhere in the jbpm documentation. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4142278#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...