Could you please open a support ticket and send us a code which demonstrates the issue to examine it locally?

for more explanation. i need to use NodeDataBound event for org chart control 
i add the following block of code 
void RadOrgChart1_NodeDataBound(object sender, Telerik.Web.UI.OrgChartNodeDataBoundEventArguments e)
        {
            info.Add(new EmployeeInfo() { Name = e.Node.GroupItems[0].Text, HierarchicalIndex = e.Node.GetHierarchicalIndex() });
        } 

but when i use e.Node.GetHierarchicalIndex() to get hierarchical index for node in order to use search cabability, i got error message sad 
Error	1	'Telerik.Web.UI.OrgChartNode' does not contain a definition for 'GetHierarchicalIndex' and no extension method 'GetHierarchicalIndex' accepting a first argument of type 'Telerik.Web.UI.OrgChartNode' could be found (are you missing a using directive or an assembly reference?)

i use dotnet 3.5 frame work