diff --git a/App_Code/SSLCommerz.cs b/App_Code/SSLCommerz.cs
index 9b3dde9..43b86a3 100644
--- a/App_Code/SSLCommerz.cs
+++ b/App_Code/SSLCommerz.cs
@@ -24,7 +24,7 @@ public class SSLCommerz
     protected bool Store_Test_Mode;
 
     protected string SSLCz_URL = "https://securepay.sslcommerz.com/";
-    protected string Submit_URL = "gwprocess/v3/api.php";
+    protected string Submit_URL = "gwprocess/v4/api.php";
     protected string Validation_URL = "validator/api/validationserverAPI.php";
     protected string Checking_URL = "validator/api/merchantTransIDvalidationAPI.php";
 
@@ -317,5 +317,10 @@ public class SSLCommerzValidatorResponse
         public string validated_on { get; set; }
         public string gw_version { get; set; }
         public string token_key { get; set; }
+        public string shipping_method { get; set; }
+        public string num_of_item { get; set; }
+        public string product_name { get; set; }
+        public string product_profile { get; set; }
+        public string product_category { get; set; }
     }
 }
diff --git a/Default.aspx.cs b/Default.aspx.cs
index ea4bc59..abd29d4 100644
--- a/Default.aspx.cs
+++ b/Default.aspx.cs
@@ -14,7 +14,7 @@ protected void Page_Load(object sender, EventArgs e)
 
         // CREATING LIST OF POST DATA
         NameValueCollection PostData = new NameValueCollection();
-        PostData.Add("total_amount", "1150.00");
+        PostData.Add("total_amount", "15.00");
         PostData.Add("tran_id", "TESTASPNET1234");
         PostData.Add("success_url",baseUrl+"Success.aspx");
         PostData.Add("fail_url", baseUrl+"Fail.aspx"); // "Fail.aspx" page needs to be created
@@ -22,7 +22,7 @@ protected void Page_Load(object sender, EventArgs e)
         PostData.Add("version", "3.00");
         PostData.Add("cus_name", "ABC XY");
         PostData.Add("cus_email", "abc.xyz@mail.co");
-        PostData.Add( "cus_add1", "Address Line On");
+        PostData.Add("cus_add1", "Address Line On");
         PostData.Add("cus_add2", "Address Line Tw");
         PostData.Add("cus_city", "City Nam");
         PostData.Add("cus_state", "State Nam");
@@ -41,8 +41,13 @@ protected void Page_Load(object sender, EventArgs e)
         PostData.Add("value_b", "ref00");
         PostData.Add("value_c", "ref00");
         PostData.Add("value_d", "ref00");
+  		PostData.Add("shipping_method", "NO");
+		PostData.Add("num_of_item", "1");
+		PostData.Add("product_name", "Demo");
+		PostData.Add("product_profile", "general");
+		PostData.Add("product_category", "Demo");
 
-        SSLCommerz sslcz = new SSLCommerz("YOUR STORE ID", "YOUR STORE PASSWORD");
+        SSLCommerz sslcz = new SSLCommerz("testbox", "qwerty", true);
         String response = sslcz.InitiateTransaction(PostData);
         Response.Redirect(response);
     }
diff --git a/README.md b/README.md
index deaf493..545237b 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,7 @@
 
 1. Visual Studio 2017
 2. [Sandbox Account](https://developer.sslcommerz.com/registration/ "SSLCommerz Sandbox Registration")
+3. TLS V1.2
 
 ## Process flow to integrate SSLCommerz by using ASP.Net sample code.
 
diff --git a/Success.aspx.cs b/Success.aspx.cs
index 4af8072..d805ac8 100644
--- a/Success.aspx.cs
+++ b/Success.aspx.cs
@@ -13,11 +13,11 @@ protected void Page_Load(object sender, EventArgs e)
         {
             string TrxID = Request.Form["tran_id"];
             // AMOUNT and Currency FROM DB FOR THIS TRANSACTION
-            string amount = "1150";
+            string amount = "15";
             string currency = "BDT";
 
             SSLCommerz sslcz = new SSLCommerz("testbox", "qwerty", true);
-            Response.Write(sslcz.OrderValidate(TrxID, amount, currency, Request));
+            Response.Write("Validation Response: "+sslcz.OrderValidate(TrxID, amount, currency, Request));
         }
         else {
             Response.Write("not found");