Problem of vuelidate

example.js

export default {
  data: () => ({
    form: {
      name: null,
      surname: null,
      age: null
    }
  }),
  validations: {
    form: {
      name: { required },
      surname { required },
      age: {
        required,
        min: val => val >= 18
      }
    }
  }
}