Ronald, I like it. So then we would have a duedate attribute with one of the following: 1) EL expression 2) jBPM calendar duration with an optional operator (+/-) 3) or both separated by a +/- operator Do you require the EL to evaluate to a java Date, java Calendar, String, or something else? Perhaps handling all three would be the right option. -Britt View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4109658#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...