title: Saving a Postman header value into a variable throughout requests in a collection
body: <p>I am trying to automate my test suite in Postman so that I don't have to manually go into each request and change that header value to what I initially put in the first request.</p>
  <p>My test suite currently looks like:</p>
  <p>First Request:</p>
  <pre><code>var headerValue = postman.setGlobalVariable('Number', headerValue);
  console.log(&quot;Number is: &quot; + headerValue);
  </code></pre>
  <p>Second Request Header:</p>
  <pre><code>Number - {{headerValue}}
  </code></pre>
  <p>I would expect headerValue to have the value of 'Number' since I have set it as a global variable but it is coming back as undefined. I'm not sure what I am doing wrong.</p>