Drill down/row details returns an empty object second time through

tomish

Hi, my row detail works the first time a user enters the page and clicks on the first table they choose. After they close that first table and open a new one, the drill down stops working. On inspection the 'd' object (see below) is empty.

 /* Formatting function for row details - modify as you need */
function format ( d ) {
// `d` is the original data object for the row
return '<table cellpadding="5" cellspacing="0" border="0" style="padding-left:50px;">'+
    '<tr>'+
        '<td>Personal Email:</td>'+
        '<td>'+d.personal_email+'</td>'+
    '</tr>'+
    '<tr>'+
        '<td>Work Email:</td>'+
        '<td>'+d.work_email+'</td>'+
    '</tr>'+
    '<tr>'+
        '<td>Job Title:</td>'+
        '<td>'+d.title+'</td>'+
    '</tr>'+
'</table>';
  }

any ideas on how to resolve this issue? Thanks!