Relação entre objetos funciona no @Form

O objeto que quero editar pelo @form se relaciona com outro que tem de ser alterado junto

public class Server {

    private String name;
    private Authentication authentication;
}

public class Authentication {

    private String user;
    private String pass;
}

@Form(Server.class)
public class AddServer extends JFrame {

    @Bindable(field = "name")
    private JTextField name;
    @Bindable(field = "usuario")
    private JTextField usuario;
    private Binder binder;

    public AddServer() {
        super("ServerForm");
        name = new JTextField(20);
        usuario = new JTextField(20);
        JButton add = new JButton("Add");
        JButton load = new JButton("Load");
        setLayout(new GridLayout(3, 2));
        add(new JLabel("Servidor:"));
        add(name);
        add(new JLabel("Usuário:"));
        add(usuario);
        add(add);
        add(load);
        load.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent evt) {
                Authentication authentication = new Authentication();
                authentication.setUser("sa");
                authentication.setPass("g07#02#bdç");

                Server server = new Server();
                server.setName("g07mscp02\\bd03");
                server.setAuthentication(authentication);
                binder.updateView(server);
            }
        });
        add.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent evt) {
                Server server = new Server();
                binder.updateModel(server);
                //person.printAttrs();
            }
        });
        pack();
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setLocationRelativeTo(null);
        binder = new AnnotatedBinder(this);
    }

    public static void main(String[] args) {
        new AddServer().setVisible(true);
    }

Erro:

com.towel.el.NotResolvableFieldException: Field 'usuario' can't be resolved for class: java.lang.Object.
    at java.lang.Class.getDeclaredField(Class.java:2070)
    at com.towel.el.handler.FieldHandler.getAcessibleField(FieldHandler.java:87)
    at com.towel.el.handler.FieldHandler.getAcessibleField(FieldHandler.java:96)
    at com.towel.el.handler.FieldHandler.addField(FieldHandler.java:79)
    at com.towel.el.handler.FieldHandler.resolveField(FieldHandler.java:37)
    at com.towel.el.FieldResolver.<init>(FieldResolver.java:74)
    at com.towel.el.FieldResolver.<init>(FieldResolver.java:56)
    at com.towel.bind.annotation.AnnotatedBinder.<init>(AnnotatedBinder.java:84)
    at com.krismorte.safetydb.swing.AddServer.<init>(AddServer.java:70)
    at com.krismorte.safetydb.swing.AddServer.main(AddServer.java:74)
------------------------------------------------------------------------

A annotation vai conseguir tratar essa relação?

MarkyVasconcelos / Towel

Relação entre objetos funciona no @Form #10