ok, fixed!, 1) The dataTable must be packed in a Portlet in the WAR file. In its portlet.xml and portlet-instances.xml descriptors, I must declare a new portlet instance with a diferent <instance-id>(one for evey kind of objects I want to manage) 2) In every Portlet I want to inject this dataTable, in its ***-object.xml file I have to write a reference to last <instance-id> name. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4149446#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...