Index: trunk/eCard/eCardMVC/Platnosci/Models/eCardData.cs
===================================================================
--- trunk/eCard/eCardMVC/Platnosci/Models/eCardData.cs (revision 957)
+++ trunk/eCard/eCardMVC/Platnosci/Models/eCardData.cs (revision 959)
@@ -52,5 +52,5 @@
             merchant.Payment = newPayment;
             GetMerchantInfo(merchant);
-            SetHash(merchant);
+            merchant.Hash = SetHash(merchant);
 
             //przeslanie w linku ordernumber potrzebnego do wyswietlenia potwierdzenia
@@ -85,12 +85,13 @@
             }
         }
-        private void SetHash(Merchant merchant)
+        public string SetHash(Merchant merchant)
         {
+            if (merchant == null)
+                throw new ArgumentNullException("parametr merchant is null in SetHash method");
+
             var platnosc = _repPayment.Find(i => i.ORDERDESCRIPTION == merchant.Payment.ORDERDESCRIPTION && i.IDFaktury == merchant.Payment.IDFaktury && i.Data == merchant.Payment.Data).SingleOrDefault();
 
-            if (platnosc == null || merchant == null)
-            {
+            if (platnosc == null)            
                 merchant.Hash = HASH_ERROR_INFO;
-            }
             else
             {
@@ -117,4 +118,5 @@
                 merchant.Hash = strResponse;
             }
+            return merchant.Hash;
         }
     }