title: find string with regular expression in load runner 12.5 extractor
body: <p>I use load runner 12.5 to record script . I want to extract a value in response script and pass it to other so I want to find 17821107849674 in script with regular expression. what should I do?</p>
  
  <pre><code>.
  .
  .
   AdfLoopbackUtils.runLoopback(
       9,
       '_afrLoop',
       '17821107849674',
       '_afrWindowMode',
       'Adf-Window-Id',
       '_afrPage',
       '',
       'w0',
       ';EBOXPORTALID=3fUCuSHtu2lAMvjhIqj5GMCRNrUTXZ_E0w-nQGzQxolJ4T38oItW!-939378123',
       '!',
       false,
  </code></pre>