Thanks, I was sure i also tested with that code and failed, but apparently now it's working. I was not able to make it work with an entity type parameter, it's saying something about cannot detecting the type for the parameter. So I tested with a Long parameter (the id of the entity and it's working) Does anyone know any more about that? The Type would be a POJO entity. Also another problem. As I said, we have a combo box and the user chooses a "current object". If i go directly on the tab that contains my filtered entity, without setting a current object first, i get this kind of error: Caused by: org.hibernate.HibernateException: Filter [hubFilteredChannels] parameter [currentHubId] value not set | at org.hibernate.impl.FilterImpl.validate(FilterImpl.java:145) | at org.jboss.seam.persistence.HibernatePersistenceProvider.enableFilter(HibernatePersistenceProvider.java:62) Why not just use the null value instead??? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4046205#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...