Hi all, Does anyone knows if it´s possible to use entities with non-default constructors and complex attributes types? I´m trying to bind the following entity to a Seam enabled form but I only get ?org.jboss.seam.InstantiationException: Could not instantiate Seam component?. @Entity @Name("study") @Table(name="?", schema="?") public class Study { private int studyId; private String name; private String description; private StudyStatus status; private StudyTemplate studyTemplate; private StudyConfiguration studyConfiguration; ... protected Study() {} public Study(String name, String description, String portfolioReference, StudyTemplate studyTemplate, User user) { super(); this.name = name; this.description = description; this.studyTemplate = studyTemplate; this.user = user; this.authorId = user.getId(); ... } ... Is it possible to bind StudyTemplate to a listbox? And the enum StudyStatus? Tks, Paulo. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4002406#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...