title: Subdomain to heroku subdomain
body: <p>I have a heroku app, lets call it <code>showering-wind-33</code>. I purchased a top level domain, let's call it <code>example.com</code>, and correctly configured my domain to render content on heroku by adding a CNAME pointing to <code>showering-wind-33.herokuapp.com</code>. So when I visit <code>example.com</code> it renders the content from <code>showering-wind-33.herokuapp.com</code>.</p>
  
  <p>I have another domain <code>foo.com</code> and I want <code>store.foo.com</code> to point to a the content in <code>store_for_foo.example.com</code>, and I'm having problems doing this. </p>
  
  <p>I tried:
  1. Adding a CNAME record in my DNS to point <code>store.foo.com</code> to <code>store_for_foo.example.com</code>
  2. Adding <code>store.foo.com</code> to "Domains" under Settings in my heroku app. </p>
  
  <p>But the result is that <code>store.foo.com</code> ends up pointing to <code>example.com</code> but not <code>store_for_foo.example.com</code> </p>
  
  <p>What am I doing incorrectly? Any help would be appreciated - thanks! How can I get the content of <code>store.foo.com</code> to show <code>store_for_foo.example.com</code></p>