title: Devops YAML - set build name using expression
body: <p>In a yaml build, is it possible to set the build name using an expression; it would be advantageous if I could match the release pipeline with the actual build id.</p>
  
  <p>Example:</p>
  
  <pre><code>trigger:  
  - master
  
  variables:  
      major: 2  
      minor: 3  
      offset: 2000  
      bid: $[$build.BuildID -as [int] + $offset]
  
  name: "$(major).$(minor).$(bid)"
  
  </code></pre>