Wow, this is a pretty specialised case. And I can't say I entirely like such a specialised call back in the listener, although I can't think of an alternative way of achieving the same. I presume you need this in 1.4.1 though, for AS 4.2? Also, as an FYI, the way the marshalling works in 2.0.0 for ST is that a List of NodeData objects is passed to the VAM. I suppose the callbacks could happen before and after generating each NodeData object in a loop. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4010779#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...