Updating PolygonHierarchy using ConstantProperty failed to render successfully

CesiumJS
1

Updating PolygonHierarchy using ConstantProperty failed to render successfully
This is a sandcastle link:
[Cesium Sandcastle](https://sandcastle lik)

Due to the need to update the polygon based on some complex logic, I cannot use CallbackProperty

2

Hi,

See the Drawing on Terrain Sandcastle example for how to implement computed polygon hierarchies.