title: Azure DevOps Set Build number variable in a Build Task
body: <p>In Azure DevOps, I created a Build. In that Build I created a ProjectBuildNumber Pipeline variable that is Settable at queue time. That variable is then used under Options -> Build number format to set my build number displayed in Azure. </p>
  
  <p>However, I am trying to make that ProjectBuildNumber variable settable in the code I am building/deploying. Is there a way I can have a Task in my Build to update that ProjectBuildNumber and update the Build number in Azure DevOps?</p>