New to ionic 4 how to trigger a location trigger local notification from background

Hi Guys,
new enough to implementing with native controls, trying to get a location based local notification to work!

id: 3,
title: 'Welcome to the show grounds!',
text: 'Click me to declare your entries!!',
sound: '',
trigger: {
  type: 'location',
  center: [53.3385394, -6.266703],
  radius: 1000,
  notifyOnEntry: true,
  notifyOnExit: false,
  single: true
vibrate: true,
foreground: true

wondering where should I implement it if I want it to be reachable in the background - and should it be called by a watch() or background geolocation? Opened to suggestions :slight_smile: