Saving data from @DataModel

[al.leguckia.gmail.com]

Hi,
In method updateStage I'm trying to save only one object from list created using @Factory method, but it always saves all elements from list. How can I make it work?

@Stateless
@Name("stageBean")
public class StagesBean implements Stages
{
     @In(create=true)
     @Out(required=false)
     StagesSchedule stage;
    
     @DataModel
     private List<StagesSchedule> stages;

     @DataModelSelection
     private StagesSchedule selectedStage;
    

     @PersistenceContext
     EntityManager em;

     public void updateStage()
     {
          StagesSchedule s = stages.get(0);
          em.merge(s);
     }

     @Factory("stages") 
     public void findStages(){
          stages = em.createQuery("select s from StagesSchedule s order by s.name").getResultList();
     }

     @Remove
     public void destroy() {}
}

[al.leguckia.gmail.com]

I'm sorry. I found out that my colleague asked for that already and gor reply.