title: Problems with posting Paypal values
body: <p>It is assumed that using the form, variables are passed by post method to return page, but it is not doing that, and I don't know what I can do about it, since transit through the Paypal website is out of my control.</p>
  
  <p>Any idea?</p>
  
  <p>This is my button. I have the same situation with another one.</p>
  
  <pre><code>&lt;form name="_xclick" action="https://www.sandbox.paypal.com/cgi-bin/webscr" method="post" target="_top"&gt;
    &lt;input type="hidden" name="cmd" value="_xclick"&gt; 
    &lt;input type="hidden" name="business" value="name@dom.com"&gt;
    &lt;input type="hidden" name="currency_code" value="EUR"&gt;
    &lt;input type="hidden" name="item_name" value="Algo"&gt;
    &lt;input type="hidden" name="amount" value="8.00"&gt;
    &lt;input type="hidden" name="no_shipping" value="1"&gt;
    &lt;input type="hidden" name="item_number" value="&lt;?php echo $_GET['id'];?&gt;"&gt;
    &lt;input type="hidden" name="custom" value="&lt;?php echo $_GET['sub'];?&gt;"&gt;
  
    &lt;input type="hidden" name="return" value="http://www.web.com/ok.php"&gt; 
    &lt;input type="hidden" name="cancel_return" value="http://www.web.com/ko.php"&gt; 
  
    &lt;input type="image" src="http://www.paypal.com/img/btn_buynow_LG.gif" border="0" name="submit" alt="Make payments with PayPal"&gt;
  &lt;/form&gt;
  </code></pre>