title: Build array from jenkins parameters
body: <p>Is it possible to build an array from a parameterized jenkins build?</p>
  
  <p>I have tried the <a href="https://wiki.jenkins-ci.org/display/JENKINS/Extended+Choice+Parameter+plugin" rel="nofollow">https://wiki.jenkins-ci.org/display/JENKINS/Extended+Choice+Parameter+plugin</a> which allows me to create a single title with multiple options within it. So I build a extended choice called services with 5 services listed as check boxes. </p>
  
  <p>However when I try to do a loop over what I thought would be an array <code>${services[@]}</code> I just get the single value of comma separated values. I tried setting <code>IFS=','</code> and that does not work. </p>
  
  <p>Any ideas?</p>