Can not get Blender Custom Properties for FBXLoader

Questions
1

box.gltf (4.7 KB)
box.fbx (17.3 KB)
box.blend (810.4 KB)

When I export gltf file from Blender with Custom Properties, I can get Custom Properties with GLTFLoader. I can find Custom Properties inside userData.

When I export fbx file from Blender with Custom Properties, I can not get Custom Properties with FBXLoader. I can not find Custom Properties inside userData.

2

FBXLoader does not support custom properties in userData fields.

4

I’d like to look into this problem and try to implement this feature. Customer properties are quite help for us to implement a simple 3D model editor.

It will be very helpful if you can provide some information and guidance.