Just to give it code example, here is how you would do for a HibernateLongInstance: First, You have a hibernate entity with id of type Long and a hibernate mapping to your class properly loaded in the same session as JBPM mappings. The mapping: <class name="mypackage.MyEntity" table="SAMPLE_ENTITY"> | <id name="id" column="id" unsaved-value="0" type="java.lang.Long"> | <generator class="native"/> | </id> | ... | </class> Then you use a HibernateLongInstance to wrap your entity and store it as any other JBPM variable: ... | // create my entity an wrap it with HibernateLongInstance | MyEntity ent = new MyEntity(); | HibernateLongInstance entWrapper = new HibernateLongInstance(); | envWrapper.setObject(ent); | | // store it to root token context | ContextInstance contextInstance = (ContextInstance) | token.getProcessInstance().getInstance(ContextInstance.class); | contextInstance.setVariable("my-entity-variable", entWrapper); | ... To access it later, just get the wrapped object and class cast it back to your entity: ... | ContextInstance contextInstance = (ContextInstance) | token.getProcessInstance().getInstance(ContextInstance.class); | HibernateLongInstance entWrapper = (HibernateLongInstance) | contextInstance.getVariable("my-entity-variable"); | MyEntity entData = (MyEntity)entWrapper.getObject(); | ... That's it! A warning though: The default configuration has Serializable type mapped before Hibernate and EJB types. That means that if your entity class implements java.io.Serializable it will get serialized as a byte array and not as a Hibernate entity. To avoid this behavior, re-order the types in jbpm.varmapping.xml. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4009404#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...