(unknown)

Can someone help me with this, im really stuck with it, i know that 
there have been some existing issues with WOPopUpButton, ive tried 
working with but havent got it right, hopefully someone could give me 
a precise guide on this, here is my schema:

  two tables (reference tables)
   - userinformation
     ->userid (primary)
     ->username
     ->userpassword
     ->userlevel
   - authenticationlevel
     ->authid (primary)
     ->autdescription (values[admin,supervisor,staff])

So basically the scenario is that a page used to add users, having 
WOPopUpButton displaying user authentication. I had it displayed, 
Unfortunately i cant save it. Here some snippet with my code:
----------------------------------------------------------------


public class Main extends WOComponent {

    protected AuthLevel auth;
    protected AuthLevel authItem;
	
	protected UserInfo  user;
	protected UserInfo  userItem;

    /** @TypeInfo AuthLevel */
    protected NSMutableArray authList;
    /** @TypeInfo UserInfo */
    protected NSMutableArray userList;	
	
	private EOEditingContext editingContext;
	private EOFetchSpecification fetchSpec;
	
	private EOEditingContext editingContext2;
	private EOFetchSpecification fetchSpec2;	
	
    public Main(WOContext context) {
        super(context);
		
		fetchSpec = new EOFetchSpecification
("userinformation", null, null);
		editingContext = session().defaultEditingContext();
		
		authList = new NSMutableArray
(editingContext.objectsWithFetchSpecification(fetchSpec));
                auth = new AuthLevel();		
		
		//======
		
		fetchSpec2 = new EOFetchSpecification
("authenticationlevel", null, null);
		editingContext2 = session().defaultEditingContext();
		
		userList = new NSMutableArray
(editingContext2.objectsWithFetchSpecification(fetchSpec2));
        user = new UserInfo();			
		
    }

    public WOComponent addUser()
    {
	    if(!userList.containsObject(user)){
		   userList.addObject(user);
		   editingContext2.insertObject(user);
           user = new UserInfo();
		}			
        return null;
    }

    public WOComponent delUser()
    {
	    userList.removeObject(userItem);
		EOEditingContext ec = userItem.editingContext();
		ec.deleteObject(userItem);		
        return null;
    }

    public WOComponent edtUser()
    {
	    user = userItem;	
        return null;
    }

    public WOComponent updUser()
    {
	    user = new UserInfo();		
        return null;
    }
	
    public WOComponent revChanges2()
    {
	    editingContext2.revert();
		userList = new NSMutableArray
(editingContext2.objectsWithFetchSpecification(fetchSpec2));	
        return null;
    }

    public WOComponent savChanges2()
    {
	    editingContext2.saveChanges();	
        return null;
    }	

}


------------------------------------------------------
Any help would be much appreciated, this is the only thing that holds 
me from my project completion.

Thank you






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