title: How to handle multiple-currency and custom quote item price on Magento?
body: <p>I have a magento store with two currency, and my items in cart have a dynamic price.
  I succesfully calculate my quote_item price, with an observer and setCustomPrice and setOriginalCustom price</p>
  
  <pre><code> $quote_item-&gt;setCustomPrice($price);
   $quote_item-&gt;setOriginalCustomPrice($price);
  </code></pre>
  
  <p>And my observer:</p>
  
  <pre><code>&lt;sales_quote_add_item&gt;
  </code></pre>
  
  <p>But i have a problem, when i change the currency of my store, the subtotal is not update.
  How to handle multiple-currency and custom quote item price ?</p>