you can pass any java object you want..... see jbpm.varmapping.xml and jbpm.converter.properties View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4028354#4028354 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4028354