hi, please help me!

i have a igHierarchicalGrid here!

var reportTemplate = data.ReportTemplate;

                            $("#grdReportTemplate").igHierarchicalGrid({
                                //initialDataBindDepth: 1,
                                dataSource: reportTemplate,
                                //dataSourceType: "json",
                                //responseDataKey: "d",
                                autoGenerateColumns: false,
                                primaryKey: "RecordID",
                                width: "100%",
                                height: "500px",
                                renderCheckboxes: true,
                                columns: [
                                    { headerText: "RecordID", key: "RecordID", width: "50px", dataType: "number", hidden: true },
                                    { headerText: "ReportID", key: "ReportID", width: "130px", dataType: "number", hidden: true },
                                    { headerText: "ParentReportID", key: "ParentReportID", width: "50px", dataType: "number", hidden: true },
                                    { headerText: "Select", key: "IsChecked", width: "80px", dataType: "bool" },
                                    { headerText: "ReportDsc", key: "ReportDsc", width: "130px", dataType: "string" },
                                    { headerText: "ReportFileName", key: "ReportFileName", width: "50px", dataType: "string", hidden: true },
                                    { headerText: "Object Type", key: "ObjectType", width: "50px", dataType: "number", hidden: true }
                                ],
                                autoGenerateLayouts: false,
                                defaultChildrenDataProperty: "oReport",
                                columnLayouts: [
                                {
                                    name: "oReport",
                                    childrenDataProperty: "oReport",
                                    //autoGenerateColumns: false,
                                    responseDataKey: "oReport",
                                    primaryKey: "RecordID",
                                    ForeignKey: "ParentReportID",
                                    renderCheckboxes: true,
                                    columns: [
                                            { headerText: "RecordID", key: "RecordID", width: "50px", dataType: "number", hidden: true },
                                            { headerText: "ReportID", key: "ReportID", width: "130px", dataType: "number", hidden: true },
                                            { headerText: "ParentReportID", key: "ParentReportID", width: "50px", dataType: "number", hidden: true },
                                            { headerText: "Select", key: "IsChecked", width: "80px", dataType: "bool" },
                                            { headerText: "ReportDsc", key: "ReportDsc", width: "400px", dataType: "string" },
                                            { headerText: "ReportFileName", key: "ReportFileName", width: "50px", dataType: "string", hidden: true },
                                            { headerText: "Object Type", key: "ObjectType", width: "50px", dataType: "number", hidden: true }
                                    ],
                                    features: [
                                           {
                                               name: "Updating",
                                               enableAddRow: false,
                                               editMode: "row",
                                               enableDeleteRow: false,
                                               showDoneCancelButtons: false,
                                               columnSettings: [
                                                   { columnKey: "IsChecked", editorOptions: { type: "bool", disabled: false } },
                                                   { columnKey: "ReportDsc", editorOptions: { type: "string", disabled: true } }
                                               ]
                                           }],
                                }
                                ],
                                features: [
                                           {
                                               name: "Updating",
                                               enableAddRow: false,
                                               editMode: "row",
                                               enableDeleteRow: false,
                                               showDoneCancelButtons: false,
                                               columnSettings: [
                                                   { columnKey: "IsChecked", editorOptions: { type: "bool", disabled: false } },
                                                   { columnKey: "ReportDsc", editorOptions: { type: "string", disabled: true } }
                                               ]
                                           }],
                            });

i loop all record of grid to get ReportID if column IsChecked= true but i can not get child record of grid

updates1 = $.extend({}, grid1.data('igGrid').pendingTransactions());
                var lsTemplateChecked = "";

                $.each(updates1, function (index, transaction) {
                    switch (transaction.type) {
                        case "row":
                            if (transaction.row.IsChecked == true && transaction.row.ObjectType == 1) {
                                if (lsTemplateChecked == "") {
                                    lsTemplateChecked = transaction.row.ReportID;
                                } else {
                                    lsTemplateChecked = lsTemplateChecked + "," + transaction.row.ReportID;
                                }
                            }

                            break;
                    }
                });

How can i get column of igHierarchicalGrid above?

Thanks you very much!!