skyAtmosphere parameters not working

CesiumJS
1

viewer.scene.skyAtmosphere seem not to work anymore.

Sancastle example:

var viewer = new Cesium.Viewer(‘cesiumContainer’);
viewer.scene.skyAtmosphere.brightnessShift = -0.8;
viewer.scene.skyAtmosphere.hueShift = 0.5;
viewer.scene.skyAtmosphere.saturationShift = 0.5;

Nothing change

2

The brightness shift you’re setting means the sky atmosphere is very dark. It shows up for me if you set it to a higher number.