Slider in VR

using UnityEngine;
using UnityEngine.UI;
using System.Collections;

public class VRSlider : MonoBehaviour {
    public float fillTime = 2f;

    Slider mySlider;
    private float timer;
    private bool gazedAt;
    private Coroutine fillBarRoutine;

    // Use this for initialization
    void Start() {
        mySlider = GetComponent<Slider>();
        if (mySlider == null)
            Debug.Log("Please add a Slider Component to this GameObject!");
    }

    // Update is called once per frame
    void Update() {
    }

    public void PointerEnter()
    {
        gazedAt = true;
        fillBarRoutine = StartCoroutine(FillBar());
    }

    public void PointerExit()
    {
        gazedAt = false;
        if (fillBarRoutine != null)
        {
            StopCoroutine(fillBarRoutine);
        }

        timer = 0f;
        mySlider.value = 0f;
    }

    //Fill the Bar
    IEnumerator FillBar()
    {
        timer = 0f;

        while (timer < fillTime)
        {
            timer += Time.deltaTime;
            mySlider.value = timer / fillTime;
            yield return null;

            if (gazedAt)
                continue;

            timer = 0f;
            mySlider.value = 0f;
            yield break;
        }

        //The bar has been filled
        OnBarFilled();
    }

    private void OnBarFilled()
    {
        Debug.Log("Do Something Amazing!!!");
    }
}