title: jbehave regex in step name
body: <p>How can I map following different steps to single java method?</p>
  
  <pre><code>    Then 1st message should be ...
      Then 2nd message should be ...
      Then 3rd message should be ...
      Then 15th message should be ...
  
      @Then("$ord(st|nd|rd|th) message should be ...")
      public void assertMessage(int ord) {...}
  </code></pre>
  
  <p>Why <code>(st|nd|rd|th)</code> is not working?</p>