How to validate certain field object?

[fauzymk]

Say I have the following form setup. I'm trying to validate only the user field but I'm unable to do it using useValidateField('user').

const { handleSubmit, errors, defineField } = useForm({
  validationSchema: yup.object({
    user: yup.object({
      name: yup.string().required(),
      address: yup.string().required(),
    }),
    extraData: yup.string().required(),
  }),
});

const [name, nameAttrs] = defineField('user.name');
const [address, addressAttrs] = defineField('user.address');
const [extraData, extraDataAttrs] = defineField('extraData');

const validateUser = useValidateField('user'); // does not work
const validateUserName = useValidateField('user.name');

Here is the sample playground https://stackblitz.com/edit/mdkx8k?file=src%2FApp.vue

I'm not sure whether this is intended or a bug. Any ideas? I really appreciate any help 🙏