public void ChangeScene(string _nextSceneName)
{
if (UICanvas.GetUICanvas("FadeCanvas") == null)
{
var fadeCanvas = UICanvas.CreateUICanvas("FadeCanvas");
DontDestroyOnLoad(fadeCanvas);
fadeCanvas.GetComponent <Canvas>().sortingOrder = 20000;
}
UIPopup fade = UIPopup.GetPopup("Fade");
fade.GetComponent <FadeOverlay>().Show(_nextSceneName);
}