title: Rundeck sharing variables across job steps
body: <p>I want to share a variable across rundeck job steps. </p>
  
  <ol>
  <li>Initialized a job option "target_files"</li>
  <li><p>Set the variable on STEP 1.</p>
  
  <p><code>RD_OPTION_TARGET_FILES=some bash command</code><br>
  <code>echo $RD_OPTION_TARGET_FILES</code><br>
  The value is printed here.</p></li>
  <li><p>Read the variable from STEP 2. <br>
  <code>echo $RD_OPTION_TARGET_FILES</code></p></li>
  </ol>
  
  <p>Step 3 doesn't recognize the variable set in STEP 1. <br>
  What's a good way of doing this on rundeck other than using environment variables? </p>