title: jmeter unique id per thread for http request
body: <p>My jmeter tests make a http request which contains a unique id.  </p>
  
  <pre><code>http://myserver.com/{uniqueId}/
  </code></pre>
  
  <p>I want to set the base number (say 35000) and increment for each thread, for example my ids would be 35001, 35002, 35003 ...</p>
  
  <pre><code>http://myserver.com/{base + count}
  </code></pre>
  
  <p>I see functions for __threadnum and __counter but how would I:</p>
  
  <ol>
  <li>set it in a variable so that I can substitute it in my url</li>
  <li>add this count to my base value</li>
  </ol>