Great, now we are getting somewhere :-D. Yes you can <distribution name="ReturnDefectiveGoods.ReturnDefectiveGoods" | sample-type="real" type="erlang" mean="94.3247" standardDeviation="52.8106"/> does this and is referred to from <sim-process path="/ReturnDefectiveGoods/processdefinition.xml"> | <process-overwrite | start-distribution="ReturnDefectiveGoods.ReturnDefectiveGoods"/> A little further on in the example. But I only tried this once so not 100% sure View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4231773#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...