Persisting it seems as simple as implementing Fork::read() as | public void read(Element forkElement, JpdlXmlReader jpdlReader) { | action = jpdlReader.readSingleAction(forkElement); | script = (Script) action; | log.debug("read()" + script.getName()); | } | If the fork is loaded the action is read back but as an action, not as a script, so casting it fails. This probably needs a small change in the fork.hbm.xml but I have no expertise in that. HEEEEEEEELLLLLPPPPPP ;-) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3980661#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...