Geofence - No Notifications

Hi all,

I want to use the Geofence Plugin in my app. I used the way described in the official documentation
I got everything to run, so onTransitionReceived is fired an in the console log I got a log saying „Transition happened“. But I do not get local notifications when I enter or leave the geofence Position. When will the notifications be fired? Do I have to configure anything else?
Does anyone know, if there are any Working examples I can use?