extjs - How to set a default value for combo box -

i have combo box has few static(hard coded) values displayed inside grid.

by default should show first value in combo box. tried few things not work. create staticcombobox first ,

      var staticcombobox = ext.extend(ext.form.combobox, {   mode: 'local',   triggeraction: 'all',   editable: false,   valuefield: 'value',   displayfield: 'label',    data: [],    initcomponent: function() {     this.store = new ext.data.arraystore({       fields: ['value', 'label'],       data: this.data     });     staticcombobox.superclass.initcomponent.call(this);   } });       var cm = new ext.grid.columnmodel([     {        id:'language',        header: "language",        dataindex: 'language',        width: 235,        menudisabled: true,        editor:  new staticcombobox({            name: 'reasons',            data: [              [0, 'reason 1'],              [1, 'second reason'],              [2, 'something else']            ]          }),           listeners: {              load: function () {                  //set combobox value here                  var combo = ext.getcmp('language');                  combo.setvalue("1");              }           }      }  ]); 

it unlikely load event cause store filled. try listen render or else.

here working example: http://jsfiddle.net/4baem/3/

use ext.data.store , data has array of records:

new staticcombobox({        name: 'reasons',        data: [{value: 0, label: 'reason1'},  {value: 1, label: 'reason2'}]     });