title: Magento : Add data to quote item object in an observer
body: <p>This is what I want to do:</p>
  
  <ol>
  <li>When I add a product to the cart, I catch the event</li>
  <li>In the associated observer, I want to add a data to the current quote item and save it.</li>
  <li>In the shopping cart, I get back this information in order to display it</li>
  </ol>
  
  <p>This is what I do in the observer : </p>
  
  <pre><code> $item = $observer-&gt;getEvent()-&gt;getQuoteItem();
   $item-&gt;setData('results',$results); 
  </code></pre>
  
  <p>In the cart I’m trying to log this value like that : </p>
  
  <pre><code> Mage::log($_item-&gt;getData('results')); 
  </code></pre>
  
  <p>But this value is empty. I think the “results” attribute is not persistent.</p>
  
  <p>Can you help me to solve my problem ?</p>
  
  <p>Please let me know if some more details are required. </p>