not validating combobox in grid editor

Hi...

I am using Extjs Version 4.2.3.

I am using grid and grid have cellEditing plugin to edit the grid.

Here in editor i am using combobox.

Combobox is working fine but...

here when i enter the random value in combobox it should show the invalid massage like invalid value.
But here it is not showing the massage.

Validateurl is also firing when i enter and tab out from the combobox.

But messaging is not showing here.

Here is my code.

This is stor objest.

var storeGrpCdVar = {

model: 'IsoCdComboModel',

url:'masterslookup/getisolist'

};

here is the code for combo box.

I am using my combo box component.

If i use this inside the form it's working fine and if i enter the random value and tabout from the combobox

then it is displaying the error like invalid.

{

xtype: 'mycombobox',

id:'editorIsoCdComboBoxId',

displayField: 'isoCd',

storeObj: storeGrpCdVar,

valueField: 'isoCd',

name: 'isoCd',

paging:true,

validateUrl:'masterslookup/validateisocd',

columnsCmc:[{

header:Modules.LblsAndTtls.isoCdLbl,

width:60,

dataIndex:'isoCd'

},{

header:Modules.LblsAndTtls.ctrSzLbl,

width:60,

dataIndex:'ctrSize'

},{

header:Modules.LblsAndTtls.containerHtLbl,

width:60,

dataIndex:'ctrHt'

},{

header:Modules.LblsAndTtls.ctrTypeLbl,

width:70,

dataIndex:'ctrType'

},{

header:Modules.LblsAndTtls.descriptionLbl,

width:200,

dataIndex:'sDescr'

}],

validateFailFunc: function (serverRespObjData) {

Ext.getCmp('editorIsoCdComboBoxId').reset();

Ext.getCmp('editorIsoCdComboBoxId').markInvliad('Invalid');

return true;

},

listeners: {

select : function(combo,records) {

var gridRecod = Ext.getCmp(Modules.CompIds.ReleaseOrderGridId).getSelectionModel().getLastSelected();

gridRecod.set('ctrSize',records[0].get('ctrSize'));

gridRecod.set('ctrHt',records[0].get('ctrHt'));

gridRecod.set('ctrType',records[0].get('ctrType'));

},

beforequery:function(queryEvent){

delete queryEvent.combo.lastQuery;

}

}

}

Help me in this...

Thanks

Kamalakar

not validating combobox in grid editor