workflow_with_coordinator_id.xml

..

  <action name="demo">
    <shell xmlns="uri:oozie:shell-action:0.1">
        <job-tracker>${jobTracker}</job-tracker>
        <name-node>${nameNode}</name-node>
        <exec>demo.bash</exec>
        <argument>${COORDINATOR_ID}</argument>
        <file>demo.bash#demo.bash</file>
    </shell>
    <ok to="End"/>
    <error to="Kill"/>
  </action>

..