I have a box and a ground with physicsImpostor, how can I keep the rotation of the ground up to date with the rotation of the box. here is the playground https://www.babylonjs-playground.com/#T310H5
If I use "ground.rotation = box.rotation", then the ground rotate but the box do not.
If I use "ground.rotation.x = box.rotation.x", then the ground will keep rotating.