reactjs - Does [React Final Form] work with Material-UI 3.x?

Question

I want to use a TextField from Material-UI with react-final-form (https://github.com/final-form/react-final-form).

The main question is "How to get values object?"

I cannot get it from TextField.

The result is:

I've already tried different examples but nothing works.

My code:

import React from 'react';
import TextField from '@material-ui/core/TextField';
import Button from '@material-ui/core/Button';
import Card from '@material-ui/core/Card';
import './loginForm.css';
import { Form, Field } from 'react-final-form';

const handleSubmit = (event, values) => {
  console.log('onsubmit event target ', event.target);
  event.preventDefault();
  console.log('onSubmit values: ', values);
};

const onChange = (event) => {
  console.log('on changed: ', event.target.value);
};

const LoginForm = () => (
  <Card className="card">
    <Form
      onSubmit={handleSubmit}
      onChange={onChange}
      render={({ values }) => (
        <form className="login-form" onSubmit={handleSubmit}>
          <Field
            name="pin"
            component={TextField}
            id="standard-name"
            label="PIN"
            value={values}
            onChange={onChange}
          />
          <Button
            type="submit"
            onClick={handleSubmit}
            variant="contained"
            color="primary"
            className="login-btn"
          >
            Sign in
          </Button>
        </form>
      )}
    />{' '}
  </Card>
);

export default LoginForm;

versions:

"@material-ui/core": "^3.9.2",
"react-final-form": "^4.0.2",