Requests the Release Number for the selected BuildMaster application from BuildMaster and injects these environment variables into the build job:

Because the Release Number and build numbers could be required by several build and post-build actions selecting the application and setting up the environment variable has been separated from the trigger build action.

If you have multiple jobs all triggering builds on the same BuildMaster application this build step will queue those jobs so that you cannot get two jobs trigger a build at the same time.