we need the merchant id

Yavsc/Settings/PayPalSettings.cs

@@ -31,6 +31,13 @@ namespace  Yavsc
         /// <returns></returns>
         public string MerchantAccountId { get; set; }
 
+        /// <summary>
+        /// Merchant PayPal Classic Api user name
+        /// </summary>
+        /// <returns></returns>
+        public string MerchantAccountUserName { get; set; }
+
+
         /// <summary>
         /// PayPal Classic Api credentials model
         /// </summary>