Hi Folks, if you want to get started with your API implemenation, you could have a look at https://svn.jboss.org/repos/jbpm/jbpm3/trunk/modules/jpdl/integration/ This is a naive jBPM3 implementation that passes the most trivial SequenceTest cheers -thomas -- xxxxxxxxxxxxxxxxxxxxxxxxxxxx Thomas Diesler BPM Product Lead JBoss, a division of Red Hat xxxxxxxxxxxxxxxxxxxxxxxxxxxx