Rotate Map with gyroscope

using UnityEngine;

public class RotateMapUsingGyro:MonoBehaviour
{
    private OnlineMaps map;
    private Transform containerTransform;

    private void Start()
    {
        Input.gyro.enabled = true;
        map = OnlineMaps.instance;

        // Wrap the map in a new GameObject to rotate around the center.
        GameObject container = new GameObject("Map Container");
        containerTransform = container.transform;
        containerTransform.position = map.transform.position + new Vector3(map.tilesetSize.x / -2, 0, map.tilesetSize.y / 2);
        map.transform.parent = containerTransform;
    }

    private void Update()
    {
        Vector3 rate = Input.gyro.rotationRate;
        containerTransform.Rotate(rate);
    }
}