title: React Native & Formik pass custom params to onSubmit
body: <p>I'm using <code>Formik</code> to submit my forms.
  I'm trying to add a custom params to my onSubmit function, so that I can get <code>values</code> of the form and that custom parameter.</p>
  <pre><code>const handleSubmit = async (customParam) =&gt; {
      console.log(customParam);
      console.log('Values : ');
      console.log(values);
  }
  
  
  &lt;AppForm initialValues={{ rejectionComment: &quot;&quot; }} onSubmit={handleSubmit(myCustomParam)}&gt; //My FORMIK form
      &lt;AppFormField multiline={true} numberOfLines={4} name=&quot;rejectionComment&quot; secured={false} autoCapitalize=&quot;none&quot; autoCorrect={false}/&gt;
      &lt;SubmitButton title=&quot;Valider&quot; /&gt; //Validation button
  &lt;/AppForm&gt;
  </code></pre>
  <p>With this code, i'm able log the <code>myCustomParam</code> but I cannot get the values of the form <code>[Unhandled promise rejection: ReferenceError: values is not defined]</code></p>
  <p>If I change <code>onSubmit</code> to <code>onSubmit={handleSubmit}</code> and <code>handleSubmit</code> to <code>const handleSubmit = async (values) =&gt; {console.log(values);}</code> i can log my values, but cannot add my custom param.</p>
  <p>Can you please provide some help ?</p>