title: Prestashop add a token to ajax file
body: <p>I tried sending to my module prestashop addons. I got a message "Technical validation has been declined". This message contain the</p>
  
  <p><strong>You need to add a token to your ajax file.</strong></p>
  
  <p>My ajax script is:</p>
  
  <pre><code>$.ajax({
          type: "post", 
          url : "../modules/priceupdate/ajax-call.php",
          data: "ajax=ps_ajax_update_prices",
          success : function(response){
              $('#update-ajaxresponse').html(response)
          }
      });
  </code></pre>
  
  <p>Regards</p>