title: phpexcel not writing data to excel file using setCellValueByColumnAndRow
body: <pre><code>$objPHPExcel = PHPExcel_IOFactory::load("untitled.xls");
  
  foreach ($objPHPExcel-&gt;getWorksheetIterator() as $worksheet) //loop through the 3 worksheets of KindleEditionEISBN
  {
  $sheet_name = $worksheet-&gt;getTitle();  
  
  if ($worksheet-&gt;getTitle = 'Records')
  {
  $highestColumm = $objPHPExcel-&gt;setActiveSheetIndex(0)-&gt;getHighestColumn();
  $highestRow = $objPHPExcel-&gt;setActiveSheetIndex(0)-&gt;getHighestRow();
  $objPHPExcel-&gt;getActiveSheet()-&gt;setCellValueByColumnAndRow($highestColumm, $highestRow, $node_10); 
  $objWriter2007 = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007');
  $objWriter2007-&gt;save('php://output');
  </code></pre>
  
  <p>The above is my code, I run it and the if loop works because I am getting the output but it does not do anything in my "untitled.xls" file</p>