diff --git a/callUpdateOrderS2S.php b/callUpdateOrderS2S.php
new file mode 100644
index 0000000..e0cbfba
--- /dev/null
+++ b/callUpdateOrderS2S.php
@@ -0,0 +1,122 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+    <style>
+        html, body {
+            margin: 0;
+            padding: 0;
+        }
+
+        .error {
+            width: 100%;
+            margin: 0;
+            border-bottom: 1px solid black;
+            background-color: #FFEC8B;
+            text-align: center;
+            font-size: 1em;
+            font-weight: bold;
+            color: red;
+            padding: 0;
+        }
+    </style>
+</head>
+<body>
+<?php
+/**
+ * Created by Gestpay.
+ * Date: 09/03/17
+ * Time: 12:32
+ *
+ * This example shows a way to use CallUpdateOrderS2S with the minimum required parameters.
+
+ * the API: http://api.gestpay.it/#CallUpdateOrderS2S
+ *
+ */
+
+//display errors.
+ini_set('display_errors', 1);
+ini_set('display_startup_errors', 1);
+error_reporting(E_ALL);
+
+
+/*****************************************************************
+ * TEST ENVIRONMENT: if set to false, this example will launch
+ * against the production server.
+ *****************************************************************/
+
+$testEnv = true;
+
+/*****************************************************************
+ * INPUT DATA
+ *****************************************************************/
+
+$shopLogin = 'GESPAY65987';
+//$shopTransactionId = null;
+$bankTransactionId = '112';
+$OrderDetails = array(
+    'CustomerDetail' => array(
+        'FirstName' => 'Peppa',
+        'Lastname' => 'Pig'
+    )
+);
+
+/****************************************************************
+ * CREATING SOAP ARGUMENTS
+ * The $param variable will contain the argument for the S2S call.
+ * If you add more parameters you must add them here.
+ ****************************************************************/
+
+
+//Set up the parameters array. This array will be the argument for the SOAP call.
+$param = array(
+    'shopLogin' => $shopLogin,
+    'bankTransactionId' => $bankTransactionId,
+    'OrderDetails' => $OrderDetails
+);
+
+
+/****************************************************************
+ * CALL CallUpdateOrderS2S
+ ****************************************************************/
+//setting up the WSDL url
+$wsdl = "https://ecomms2s.sella.it/gestpay/gestpayws/WSs2s.asmx?WSDL";
+if ($testEnv) {
+    //Test
+    $wsdl = "https://testecomm.sella.it/gestpay/gestpayws/WSs2s.asmx?WSDL";
+}
+
+//Soap client
+$client = new SoapClient($wsdl);
+
+//do the call to Encrypt method
+try {
+    $objectResult = $client->CallUpdateOrderS2S($param);
+} //catch SOAP exceptions
+catch (SoapFault $fault) {
+    die($fault);
+}
+
+//parse the XML result
+$result = simplexml_load_string($objectResult->CallUpdateOrderS2SResult->any);
+
+//Error Check
+$errCode = (string)$result->ErrorCode;
+$errDesc = (string)$result->ErrorDescription;
+
+if ($errCode != "0") {
+    //An error has occurred;  check ErrorCode and ErrorDescription
+    echo '<div class="error">Error: ';
+    echo $errCode;
+    echo '<br>ErrorDesc: ';
+    echo $errDesc;
+    echo '</div>';
+}
+//this is the output
+echo '<pre>';
+print_r($result);
+echo '</pre>';
+
+?>
+</body>
+</html>
+
