Invalid attribute name.glTF Validator(MESH_PRIMITIVE_INVALID_ATTRIBUTE)

[HM1-1AM]

Hi,

I am using .gltf file to transfer scene information to unreal engine 5.

When I try to add additional information to .gltf file such as "pshape": 2,"radius3": 3 information (see screenshot below), there is an error "Invalid attribute name.glTF Validator(MESH_PRIMITIVE_INVALID_ATTRIBUTE)".

So my question is, is this the right way to add or there is something else I need to do to add this info to the .gltf file.

[donmccurdy]

@HM1-1AM perhaps you meant to file this discussion on the glTF Validator repository (https://github.com/KhronosGroup/glTF-Validator)? Valid attribute names are listed in the glTF spec, custom attributes must be prefixed by an underscore. For example, _PSHAPE and _RADIUS3 should pass validation.