The situation with jbpm-3.2.3.GA and below is that there is no stable public API defined for it. As a result, application code depends on implementation detail that might change without prior notice between the versions. To fix this we are going to define a BPM API which is going to bee the standard of how you work with BPM in JBoss. For more on this, please go to http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4160822#... View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4160827#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...