HiddenArea.OnCollisionExit2D C# (CSharp) Method

    public virtual void OnCollisionExit2D(Collision2D coll)
    {
        // Make opaque if all characters have left
        CharacterMove character = coll.transform.GetComponent<CharacterMove>();
        if (character != null)
        {
            numChar--;
            if (numChar == 0)
            {
                myRenderer.color = new Color(1f, 1f, 1f, 1f);
            }
        }
    }
}