Ionic access to storage on background when push notification arrives

Ionic Framework ionic-v3
1

When push notifications arrive I’m trying to save this notifications to storage. Is it possible to access storage at fcm.onNotification method.

Here is my code.

fcm.onNotification().subscribe(data=>{

    this.storage.set("NOTIFICATION",data);

  if(data.wasTapped){
    console.log("Received in background");
     this.redirectPage();
  } else {
      this.showPushToast();
    console.log("Received in foreground");
  };
})