Custom Animation

public Image m_Image;
public Sprite[] m_SpriteArray;
public float m_Speed = .02f;
private int m_IndexSprite;
Coroutine m_CorotineAnim;
bool IsDone;
public void Func_PlayUIAnim()
{
   IsDone = false;
   m_CorotineAnim = StartCoroutine(Func_PlayAnimUI());
}
public void Func_StopUIAnim()
{
   IsDone = true;
   StopCoroutine(m_CorotineAnim);
}
IEnumerator Func_PlayAnimUI()
{
        yield return new WaitForSeconds(m_Speed);
        if (m_IndexSprite >= m_SpriteArray.Length)
        {
            m_IndexSprite = 0;
        }
        m_Image.sprite = m_SpriteArray[m_IndexSprite];
        m_IndexSprite += 1;
        if (IsDone == false)
            m_CorotineAnim = StartCoroutine(Func_PlayAnimUI());
}