eclipse is responsible for compiling. the .class files are deployed. using external classes depends on nthe deployment model of your jbpm engine View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3991495#3991495 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3991495