Hi! Thanks a lot for answering! (I was starting to lose hope) it worked perfectly, I left the file empty by detecting if the entity was mutable, I used: @org.hibernate.annotations.Entity(mutable=false) and in the .ftl: <#if pojo.decoratedObject.mutable> I will try the exporter_class property for the launch file later, thanks for the tip. (It would be nice if you guys could document all the options available for .launch files). Thanks again!! Regards, P.D. I see that in version 3.3.1 of the annotations there is a new annotation @Immutable... I wonder what is the difference with Entity(mutable=false) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4165139#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...