This example shows how to use the CesiumExt.data.store.EntityStore class:

• Each Change in the Grid Panel will be reflected in Cesium.Entity and Cesium.EntityCollection classes.
• And each change on Cesium.Entity and Cesium.EntityCollection will also be reflected in the Grid Panel.

Remark: Double click in the Grid Row to edit the Cesium Entity.

Have a look at entity.js to see how this is done.