i am trying to update only one column in a row using fnupdate but looks like its not working

mithun shetty

var nTr=$("#"+rowId).parent().parent();
var columnIndex="";

$('#ListData_data_wrapper .dataTables_scrollHead table thead tr').find('th').each(function($index){console.log($(this).text());
if($(this).text() == 'Status'){
// alert($index);
columnIndex=$index;
}
});

Column index gives me the index of row which i need to update

data.ListDataTable.fnUpdate(result.aaData[0],nTr[0],columnIndex,false);