problems with MVC template

<window title="Data Binding in MVC" border="normal" apply="MyComposer">

        <button id="changeButton" label="Change data"></button>

        <listbox id="listbox" model="${$composer.dataModel}">
            <listhead>
                <listheader>Name</listheader>
                <listheader>Info</listheader>
            </listhead>

            <template name="model">
                <listitem>
                    <listcell>
                        <label value="${each.name}"></label>
                    </listcell>
                    <listcell>
                        <textbox value="${each.info}"></textbox>
                    </listcell>
                </listitem>
            </template>
        </listbox>

    </window>

public final class MyComposer extends SelectorComposer<Component> {

    @Wire
    private Button changeButton;

    @Wire
    private Listbox listbox;

    private ListModelList<Person> dataModel = new ListModelList<Person>();


    public ListModelList<Person> getDataModel() {
        return dataModel;
    }


    public void setDataModel(ListModelList<Person> newDataModel) {
        dataModel = newDataModel;
    }


    @Override
    public void doAfterCompose(Component comp) throws Exception {
        super.doAfterCompose(comp);
        for (int i = 0; i < 10; i++) {
            dataModel.add(new Person());
        }
    }


    @Listen("onClick = #changeButton")
    public void onButtonClick() {
        for (int i = 0; i < dataModel.getSize(); i++) {
            dataModel.getElementAt(i).setName("New Name");
            dataModel.getElementAt(i).setInfo("New Info");
        }

        Clients.showNotification("Data has been changed");
    }
}

public class Person {

    private String name;

    private String info;


    public String getName() {
        return name;
    }


    public void setName(String newName) {
        name = newName;
    }


    public String getInfo() {
        return info;
    }


    public void setInfo(String newInfo) {
        info = newInfo;
    }


    public Person() {
        name = "Initial Name";
        info = "Initial Info";
    }
}