"kukeltje" wrote : Probably the same is needed for making the join configurable as well... correct? With a little beanshell an n-out-of-m join can be created in jdpl for the moment (until it becomes an attribute...., same is true for the 'descriminator') | | Next step would be to be able to use drools for this also, at least on the fork..... I'm looking into this now I understand more of the internals of jBPM. | making the join configurable is not really my priority. if you want, you can add and maintain it. but i would like to keep the jpdl language stable till 4.0. that's where i want to do a revision of the language constructs. and have all things like n-out-of-m and things like that. improved drools integration is on the todo list for 3.x. don't know yet how that will look like. feel free to prorotype some ideas. if it is additions without changes to the current jpdl language, i won't have much objections. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3980808#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...