title: Passing data (variable/parameter) from one downstream job to upstream job in order to pass the data to another downstream job
body: <p>I have a scenario where I am triggering two downstream jobs one after another sequentially from an upstream job.</p>
  <p>I need to return data <code>xyz = 3.1416</code> (parameter/variable) generated in the first downstream job (Job A) back to the upstream job or read data <code>xyz</code> (parameter/variable) generated in the first downstream job (Job A) from the upstream job.</p>
  <p>I want to do that as the upstream job needs to pass this data to the other downstream job (Job B).<br />
  All these jobs are pipeline jobs.
  I am writing the upstream job as an abstraction layer and to automate the trigger of the 2 downstream jobs sequentially one after another.</p>
  <p><a href="https://i.stack.imgur.com/Tm1JT.jpg" rel="nofollow noreferrer">structure / flowchart of jobs</a></p>