Leaderboard Server API Notification Parameter

Hello,

Leaderboards have the option to enable "Send "Friend surpassed" notifications" via the dashboard. We are using the Leaderboard Server API to automate the creation of new Daily Leaderboards and we want to enable this paramter but the documentation does not list it.

Does anyone know the name of the Notification / "Send "Friend surpassed" notifications" parameter for Leaderboard Server API?