title: WooCommerce Add item to Order
body: <p>I'm trying to add an item to an existent order but it's not working properly... Everytime I execute the code below it ads and empty item, any help?</p>
  
  <pre><code>woocommerce_add_order_item($Novo_PostId, $item);
  </code></pre>
  
  <p>$item is the var witch receives the item itself from another order I have, I've put a print_r($item) and it appears to be ok.</p>