Files to upload to a server.

The string is a comma separated list of includes for an Ant fileset eg. '**/*.jar' (see Patterns in the Ant manual).
The base directory for this fileset is the artifacts directory of the build that is being promoted. Ensure that you "Archive the artifacts" in the Post-build Actions to make your artifacts available during a promotion
Change the base directory to the workspace by setting the "Use the workspace" checkbox.