Hi koenhandekyn I noticed almost the same behavior but, in my case, the variable gets duplicated. What I mean is that after executing a method in the class I end up with TWO variables with the same name (in your case invoice), one containing the new value and the new one (also called invoice but with a higher Id) containing the same value of the original invoice. Have you seen something like that? Thanks in advance, Claudio View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4054979#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...