Copy artifacts from a build that is a downstream of a build of the specified project. You can use variable expressions.

Downstream builds are found using fingerprints of files. That is, a build that is triggered from a build isn't always considered downstream, but you need to fingerprint files used in builds to let Jenkins track them.

Note: "Downstream build of" is applicable only to AbstractProject based projects (both upstream and downstream projects).

AbstractProject based projects:
Freestyle projects
Multi-configuration projects
Maven projects
Non AbstractProject based projects:
Pipeline jobs (aka. Workflow jobs)