Hi, Thanks for your kind instructions. I've tried all meshes in the training data and all meshes can generate valid json files, and the algorithm can also pass the try-out you offered, but I still fail to submit with reminders "failed on one or more cases". I think the error may be caused by the evaluation, so can you share more information about the evaluation? For example, the category ranges, metric computing method, and in what circumstances it would fail? Thanks a lot.