title: String replace method not doing anything in Flex 4 app
body: <p>I have a string called userEmail in my Flex 4 app that has a value of:</p>
  
  <pre><code>my%40email.com
  </code></pre>
  
  <p>I need to have an @ symbol instead of %40, so I run this line:</p>
  
  <pre><code>userEmail.replace("%40","@");
  </code></pre>
  
  <p>But the string has the same value after. What am I doing wrong?</p>
  
  <p>Thanks for reading.</p>