Creating datashape relevant to saved search table in windchill

Yes. I'm trying to execute saved search. I'm using the below code. Here "ptc-sample-ds" is the datashape which I created according to the saved search table.  But apart from name and state other columns does not have values. I need help to fix this.

// result: JSON
var csrf_token = me.Security_Get_CSRF().items[0].attributes.nonce;
var params = {
infoTableName : "InfoTable",
dataShapeName : "ptc-sample-ds"
};
// CreateInfoTableFromDataShape(ptc-part-demo-shape)
var result = Resources["InfoTableFunctions"].CreateInfoTableFromDataShape(params);
var select = "";
// infotable datashape iteration
var dataShapeFields = result.dataShape.fields;
for (var fieldName in dataShapeFields) {
select += ',' + fieldName;
}
// result: JSON
var searchResult = me.Search_Get_SavedSearch_Results({
arguments: undefined /* JSON */,
oid: oid /* STRING */,
CSRF_NONCE: csrf_token /* STRING */,
$select: select /* STRING */
});
var row = {};
for each (var hit in searchResult.items) {
row = hit.attributes;
row.objectId = hit.id;
result.AddRow(row);
}