Kentico: Nested QueryRepeater to display content on current item if equal to current page content

gistfile1.html

<script runat="server">
    protected override void OnInit(EventArgs e)
    {
        base.OnInit(e);
        
        var school = CMS.CMSHelper.CMSContext.CurrentResolver.ResolveMacros("{?School?}").ToString().ToLower();
        var modality = CMS.CMSHelper.CMSContext.CurrentResolver.ResolveMacros("{?Modality?}").ToString().ToLower();
        var nodeAlias = CMS.CMSHelper.CMSContext.CurrentResolver.ResolveMacros("{?NodeAlias?}").ToString().ToLower();

        if (school != "" && modality != "" && nodeAlias != "") 
        {
            qrConcentrations.WhereCondition = "v1.School like '%" + school + "%' AND v1.Modality LIKE '%" + modality + "%' AND v1.DegreeType = 'Concentration' AND dc.CategoryID IN (SELECT dc2.CategoryID FROM CMS_DocumentCategory dc2 JOIN View_custom_DegreePrograms_Joined v2 ON v2.documentID = dc2.documentID WHERE v2.NodeAlias = '" + nodeAlias + "' AND v2.ClassName = 'custom.DegreePrograms' AND v2.DegreeType <> 'Concentration')";
            qrConcentrations.ReloadData(true);
        }
    }
  
    public bool isCurrentPage(string nodeAlias)
    {
        return nodeAlias.ToLower() == CMS.CMSHelper.CMSContext.CurrentResolver.ResolveMacros("{?NodeAlias?}").ToString().ToLower();
    }
  
</script>
<li>
    <a href="/academics/school-of/<%# CMS.CMSHelper.CMSContext.CurrentResolver.ResolveMacros("{?School?}").ToString().ToLower() %>/online/degree/<%# Eval("NodeAlias").ToString().ToLower() %>"> 
            <%# Eval("DegreeType") %> <%# IfCompare(Eval("DegreeType"), "Bachelor of Arts", "", "in") %><%# IfCompare(Eval("DegreeType"), "Bachelor of Science", "", "in") %><%# IfCompare(Eval("DegreeType"), "Master of Arts", "", "in") %> <%# Eval("DegreeName") %>
    </a>
    <ul class="arrow">
        <cms:QueryRepeater ID="qrConcentrations" runat="server" 
            Visible='<%# isCurrentPage(Eval<String>("nodeAlias"))%>'
            QueryName="custom.DegreePrograms.GetConcentrationsBySchoolModalityAndCategory" 
            TransformationName="custom.degreeprograms.concentrations" 
            OrderBy="v1.DegreeName ASC" 
            PagerControl-PagerHTMLBefore="<li>" 
            PagerControl-PagerHTMLAfter="</li>">
        </cms:QueryRepeater>
    </ul>
</li>