Local Notifications not work

Ionic Framework ionic-v3
#1

Hello, I have a problem and I need your help.
I have an app where I set up a local notification at a specific time. If the app is open, notifications arrive fine, but if the app is closed they never fire. I leave my code so they can see and help me. Thank you very much

var h = Sat Mar 18 2017 11:17:00 GMT-0300;

LocalNotifications.registerPermission();

LocalNotifications.schedule([{ // AVISO 5 MINUTOS ANTES DE Q ESTE LISTO
  id: 1,
  text: 'Pedido Próximo a vencer',
  at: h,
  led: 'FF0000',
  sound: 'res://platform_default',
  icon: 'file://assets/img/icon.png',
  smallIcon: 'file://icon.png',
  data: {
    data: data,
    mensaje: 'Pedido Próximo a vencer'
  }
}]);