Adding Expando to tablepanel

Hi Guys,

How can I include an Expando  in a tablepane, I would like that each row have an expando that I can use to include some other things as in the below screenshot

<column colName="SerialNo" header="Serial No" OnDrawCell="DrawLink" width="10%" filterType="text" filterOp="["/>

i've used the below so i can include the expando but its not working, so how can I include a zen control like expando onDrawCell or in my tablepane ?

Method DrawLink(pTable As %ZEN.Component.tablePane, pName As %String, pSeed As %String) As %Status
{
  WRITE "<expando caption=""Subexpando"" OnDrawContent=""GETlink"" remember=""true""></expando>"
Quit $$$OK
}
 

Thanks