title: Regular expression to replace a value in query parameter
body: <p>I get a query string from url by saying request.queryString() as -</p>
  
  <pre><code>supplyId=123456789b&amp;search=true
  </code></pre>
  
  <p>I want to replace the value for <strong>"supplyId"</strong> with a new value. <strong>"supplyId"</strong> can come at any position in the query string. What would be the possible regular expression for this?</p>