问如何在itemRenderer中反映list.selectedItem的变化？

EN

public class Item
{
  public var noBinds:String = "initvalue";
  [Bindable]
  public var bindMe:String = "initvalue";

  //a constructor that takes two arguments goes here
}

//dp is the dataProvider of a data grid with two columns:

//this will add new item to the grid
dp.addItem(new Item("blah", "blah1"));

/* update the selected item */

//not bindable
dp.selectedItem.noBinds = "new string; but not shown";

//update the Bindable item
dp.selectedItem.bindMe = "new string; this will be updated";