title: Setting "Note" field in PayPal Donation Form via PayPal Button
body: <p>I'm trying to set the "write a note" field (which appears in the PayPal donation form) programmatically via a PayPal button.  The field can be seen <a href="https://i.stack.imgur.com/i7x9z.png" rel="nofollow noreferrer">here</a>.</p>
  
  <p>According to the <a href="https://developer.paypal.com/docs/classic/paypal-payments-standard/integration-guide/Appx_websitestandard_htmlvariables/#individual-items-variables" rel="nofollow noreferrer">current documentation</a>, it looks like I need to just assign a value to the <code>item_name</code> variable.  I have the following HTML, but it doesn't seem to do the trick:</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;form action="https://www.paypal.com/cgi-bin/webscr" method="post" target="_blank"&gt;
   &lt;input type="hidden" name="cmd" value="_donations"&gt;
   &lt;input type="hidden" name="business" value="xxx@xxxxx.com"&gt;
   &lt;input type="hidden" name="amount" value="10"&gt;
   &lt;input type="hidden" name="item_name" value="hellooo!!!"&gt;
   &lt;input alt="PayPal - The safer, easier way to pay online!" name="submit" src="https://www.paypalobjects.com/en_US/i/btn/btn_donateCC_LG.gif" type="image" /&gt;
   &lt;img src="https://www.paypalobjects.com/en_US/i/scr/pixel.gif" alt="" width="1" height="1" border="0" /&gt;
  &lt;/form&gt;</code></pre>
  </div>
  </div>
  </p>
  
  <p>Note: this code previous worked on the older version of the Donation form.  Could this be a breaking change?</p>