Spark AR - Set 3D element to the position of the mouth

// How to load in modules
const FaceTracking = require('FaceTracking');
const D = require('Diagnostics');
const Scene = require('Scene');
const TouchGestures = require('TouchGestures');
const object = Scene.root.find("object");

face.mouth.openness.monitor().subscribe(function(event) {
  if(event.newValue > 0) {
    object.transform.x = FaceTracking.face(0).cameraTransform.applyTo(FaceTracking.face(0).mouth.center).x;
    object.transform.y = FaceTracking.face(0).cameraTransform.applyTo(FaceTracking.face(0).mouth.center).y;
    object.transform.z = FaceTracking.face(0).cameraTransform.applyTo(FaceTracking.face(0).mouth.center).z;
  }
});