EditorGridPanel 中的TriggerField 怎么将值返回给grid的列id???

//货物类型
    var hwlx_edit = new Ext.form.TriggerField({ triggerClass: 'x-form-search-trigger',hiddenName:'hiddenhwlx',hiddenValue:'hiddenhwlx',onTriggerClick: function(e) { GoodsCatalogFn(); } });
    var cm_add = new Ext.grid.ColumnModel([
        { header: '货类', dataIndex: 'hwlx_add', id: 'hwlx_add', width: 65, editor: hwlx_edit},var grid_add = new Ext.grid.EditorGridPanel({
       plugins: summary,
       id:'grid_add',
       ds: ds_add,
       cm: cm_add,
       sm: sm_add,
       height: 160,
       width: 780,
       clicksToEdit: 1,
       listeners: {
          
       },editorgrid中其中一列用到了triggerfield  现在不知道如何将弹出的窗口的值 返回给grid的列 "货类"