$HOCKEYAPP_INSTALL_URL_n environment variable seams to not be working.

It should contain a direct download link to the application while using Hockey post build action for releasing. From the docs release notes (Version 1.2.0):

HOCKEYAPP_INSTALL_URL_n environment variables after successful upload. The 'n' is replaced with the app index.

Unfortunately it does not resolve to any value. The other environment variable -$HOCKEYAPP_INSTALL_URL (without "n"), works fine.

Any help would be appreciated.