title: WordPress: ACF add rows to a repeater field
body: <p>I'm looking for a way to add rows to a repeater field in ACF Pro. I found <a href="https://stackoverflow.com/questions/24879399/wordpress-acf-how-to-add-rows-to-a-repeater-field-attached-to-a-user-via-custom">this post</a> but the solution post doesn't seem to work. I will describe my problem:</p>
  
  <p>I have a custom post type called "gebruikers", a repeater field called "logins" and a rows that can have a field called "datum". I would like to be able to add a value to a new row in the field "datum". Is this possible?</p>
  
  <p>My code so far:</p>
  
  <pre><code>$field_key = "logins";
  $user_id = "gebruiker_23";
  $value = get_field($field_key, $user_id);
  $value[] = array('date' =&gt; date('Y-m-d H:i:s'));
  update_field( $field_key, $value, $user_id );*/
  </code></pre>