Dependency issue

```
const Register = () => {

const {data} = useAuthUser(["user"], auth)

const ref = doc(usersDb, data.uid)
const addOtherFields = useFirestoreDocumentMutation(ref)

const newUser = useAuthCreateUserWithEmailAndPassword(auth, {
onSuccess(){
addOtherFields.mutate({name: "jhon Smith", age:20})
}
})

const submit = () => {
newUser.mutate({ email: "john9989@gmail.com", password: "123456" });
};

return (

export default Register;
```

how can I use the uid of the user in the doc reference path.
I am trying to add additional data about the user in a `users` collection.