title: How to pass ${CHANGES} to downstream job?
body: <p>I have upstream job that polls SVN for changes. 
  If changes are detected, the build is started. 
  After the build, the upstream project calls downstream project to run test. I'm using "Trigger Parameterized Build".</p>
  
  <p>I want that downstream project will be able to send an email with test results and SVN changes that cause to the build/test. But the problem is that if I'm using ${CHANGES} variable in downstream it appear to be empty. </p>
  
  <p>How can I pass ${CHANGES} from upstream project to downstream project?</p>