获取不到选择ext某一列的数据

function showeditPanel()

{

var record = grid.getSelectionModel().getSelected()

if(!record){

Ext.Msg.alert('信息','请选择要编辑的数据');

return;

}

if(!editWindow)

{

editWindow = new Ext.Window({

el: 'edit_win',
title:'编辑记录',

width: 650,

height: 360,

closable: false,

closeAction: 'hide',

resizable: false,

items: editForm
});

            }  

            editWindow.show(Ext.get('editDataButton'));


          editWindow.getForm().loadRecord(record); [color=red]为什么这里获取不到value[/color]        
        } 

editForm = new Ext.FormPanel( {
title: 'title',
frame: true,
width: 300,
labelAlign: 'right',
labelWidth: 60,
defaultType: 'textfield',
defaults: {
width: 200,
allowBlank: false
},
defaultType : 'textfield',
items : [{
id:'ids',

name : 'model.id'
},{
fieldLabel : '名字',
name : 'model.name'
},{
fieldLabel : 'itemName',
name : 'model.itemName'
},{
fieldLabel : 'itemValue',
name : 'model.itemValue'
},new Ext.form.TextArea( {
fieldLabel : 'remark',

name : 'model.remark'
}
)],

buttons : [{
text: '保存',
handler: function() {
if (editForm.form.isValid()) {
editForm.form.doAction('submit',{
url : 'save.html',
method:'post',
success: function(form, action){
Ext.Msg.alert('success', action.result.info);
ds.load();
editForm.reset();
editWindow.hide();
},
failure : function(form, action) {
Ext.Msg.alert('修改失败', '添加级别失败！');
}
});
}
}
},{
text : '取消',
handler : function() {
editWindow.hide();
}}
]

    }); 

var grid = new Ext.grid.GridPanel( {**************})