Ignite UI jQuery Hierarchical Grid - activeRowChanged event

http://www.infragistics.com/community/forums/t/83954.aspx

HTML

<script src="http://cdn-na.infragistics.com/jquery/20122/latest/js/infragistics.loader.js"></script>
<div id="dgCategory"></div>
<div id="selection"></div>

JavaScript

var categoryList;
$.ig.loader({
    scriptPath: 'http://cdn-na.infragistics.com/jquery/20122/latest/js/',
    cssPath: 'http://cdn-na.infragistics.com/jquery/20122/latest/css/',
    resources: "igHierarchicalGrid.Selection"
});

setupData();

$.ig.loader(function () {
    $("#dgCategory").igHierarchicalGrid({
        primaryKey: "CategoryID",
        width: 270,
        dataSourceType: "json",
        height: 300,
        autoGenerateColumns: false,
        responseDataKey: "List",
        showHeader: true,
        initialDataBindDepth: -1,
        initialExpandDepth: -1,
        dataSource: categoryList.List,
        columns: [{
            key: "CategoryID",
            dataType: "number",
            hidden: true
        }, {
            key: "CategoryName",
            headerText: "Category",
            dataType: "string"
        }],
        autoGenerateLayouts: false,
        columnLayouts: [{
            key: "PropertyList",
            primaryKey: "PropertyID",
            foreignKey: "CategoryID",
            responseDataKey: "List",
            autoGenerateColumns: false,
            autoGenerateLayouts: false,
            showHeader: true,
            columns: [{
                key: "CategoryID",
                dataType: "number",
                hidden: true
            }, {
                key: "PropertyID",
                dataType: "number",
                hidden: true
            }, {
                key: "PropertyName",
                headerText: "Property"
            }],
            columnLayouts: [{
                key: "ValueList",
                primaryKey: "ValueID",
                foreignKey: "PropertyID",
                responseDataKey: "List",
                autoGenerateColumns: false,
                autoGenerateLayouts: false,
                showHeader: false,
                rowTemplate: "<tr><td></td><td></td><td data-datakey='${PropertyID}'>${Value}</td></tr>",
                columns: [{
                    key:...