Playing a custom sound for local notificaitons

Hey, I just tried this (see alarm.wav in XCode) but wasn’t able to get the sound to work.

I’m at the moment in development mode using the simulator.
Do I need to create a production binary build?

const _notificationID = await Notifications.scheduleNotificationAsync({
        content: {
          title: "One Alarm",
          subtitle: "It's time.",
          sound: "alarm.wav",
        },
          trigger:null
      });

Daniel