Replying to myself here, the issue was that the process was undeployed after state transition by the junit test involved, so it works now. However, now when accessing the variable in the asynchronous node it returns a org.jbpm.bytes.ByteArray object instead of my Serializable type in the ActionHandler, I end up with a ClassCastException, how do I get my original object? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4179130#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...