Extjs自定义多字段VTypes

Ext.apply(Ext.form.field.VTypes,{
        //验证方法
        verifypwd:function(val,field){
            var valiStatus=true;//验证状态
            var textfield=Ext.getCmp(field.verifypwd.id);
            var form=textfield.up('form').getForm();
            var passwd=form.getFieldValues().password;
            if(textfield.lastValue!=passwd){
                valiStatus=false;
            }
            return valiStatus;
        },
        verifypwdText:'密码不一致'//验证错误出现的提示
    })

      fieldLabel:'confirm password',

	    xtype:'textfield',
            inputType:'password',
            id:'verify',
            verifypwd:{id:'verify'},
            vtype:'verifypwd'