Filter is not working for rowData having reference value

[tarunsharma]

Hi,

My filter is not working for the columns having reference value as show below. Can you guide me how this will get fix?

title: GS.res.freightRate.TransportTypeLabel, dataType: "string", editable: false, align: "left", minWidth: 120, dataIndx: "TransportationType",
                render: function (ui) {
                    return ui.rowData['TransportationType']['SearchValue'];                   
                }, filter: { crules: [{ condition: 'contain' }], listeners: ['keyup'] },