title: How to generate .xls file with dynamic file name
body: <p>I'm generating .xls file by loading an existing .xls file and by doing some cell mapping filling values in the excel sheet form. While saving it I've given a static file name to save it in the server. Now I want the file name to be dynamic in such a way, I'm passing some request_id in the URl to run my code and I want that code to be appended in the File Generated.</p>
  
  <p>For example, In my code I'm saving it by
  $objWriter->save('Form.xls');</p>
  
  <p>While running my code, I'm passing a request_id like,
  /Form.php?request_id=377</p>
  
  <p>So, I want the request_id to be appended in the excel file getting saved, i.e Form_377.xls</p>
  
  <p>Please advise. Thanks in advance!
  Krishna</p>