diff --git a/Nop.Plugin.Misc.AuctionPlugin/Domains/Dtos/Interfaces/IProductToAuctionDtoBase.cs b/Nop.Plugin.Misc.AuctionPlugin/Domains/Dtos/Interfaces/IProductToAuctionDtoBase.cs
index 0e82738..2bc8b17 100644
--- a/Nop.Plugin.Misc.AuctionPlugin/Domains/Dtos/Interfaces/IProductToAuctionDtoBase.cs
+++ b/Nop.Plugin.Misc.AuctionPlugin/Domains/Dtos/Interfaces/IProductToAuctionDtoBase.cs
@@ -9,6 +9,7 @@ public interface IProductToAuctionDtoBase : IMgModelDtoBase
     public int AuctionId { get; set; }
 
     public int WinnerCustomerId { get; set; }
+    
     public AuctionStatus AuctionStatus { get; set; }
 
     public decimal StartingPrice { get; set; }
@@ -17,5 +18,4 @@ public interface IProductToAuctionDtoBase : IMgModelDtoBase
     public int ProductAmount { get; set; }
 
     public int SortIndex { get; set; }
-    public string BiddingNumber { get; set; }
 }
\ No newline at end of file
diff --git a/Nop.Plugin.Misc.AuctionPlugin/Domains/Dtos/ProductToAuctionDto.cs b/Nop.Plugin.Misc.AuctionPlugin/Domains/Dtos/ProductToAuctionDto.cs
index b7f06ca..0f97f9d 100644
--- a/Nop.Plugin.Misc.AuctionPlugin/Domains/Dtos/ProductToAuctionDto.cs
+++ b/Nop.Plugin.Misc.AuctionPlugin/Domains/Dtos/ProductToAuctionDto.cs
@@ -12,7 +12,7 @@ public class ProductToAuctionDto : IProductToAuctionDto
     public int ProductId { get; set; }
     public int AuctionId { get; set; }
     public int WinnerCustomerId { get; set; }
-    public string BiddingNumber { get; set; }
+
     public AuctionStatus AuctionStatus { get; set; }
     public decimal StartingPrice { get; set; }
     public decimal CurrentPrice { get; set; }
@@ -60,7 +60,6 @@ public class ProductToAuctionDto : IProductToAuctionDto
         ProductAmount = productToAuction.ProductAmount;
         SortIndex = productToAuction.SortIndex;
         WinnerCustomerId = productToAuction.WinnerCustomerId;
-        BiddingNumber = productToAuction.BiddingNumber;
     }
 
     public ProductToAuctionMapping CreateMainEntity()
@@ -76,7 +75,6 @@ public class ProductToAuctionDto : IProductToAuctionDto
         mainEntity.ProductAmount = ProductAmount;
         mainEntity.SortIndex = SortIndex;
         mainEntity.WinnerCustomerId = WinnerCustomerId;
-        mainEntity.BiddingNumber = BiddingNumber;
 
         return mainEntity;
     }
diff --git a/Nop.Plugin.Misc.AuctionPlugin/Domains/Entities/Interfaces/IProductToAuctionMapping.cs b/Nop.Plugin.Misc.AuctionPlugin/Domains/Entities/Interfaces/IProductToAuctionMapping.cs
index 5999838..e070c2d 100644
--- a/Nop.Plugin.Misc.AuctionPlugin/Domains/Entities/Interfaces/IProductToAuctionMapping.cs
+++ b/Nop.Plugin.Misc.AuctionPlugin/Domains/Entities/Interfaces/IProductToAuctionMapping.cs
@@ -5,6 +5,8 @@ namespace Nop.Plugin.Misc.AuctionPlugin.Domains.Entities.Interfaces;
 
 public interface IProductToAuctionMapping : IProductToAuctionDtoBase, ITimeStampInfo //, ISoftRemoveEntityInt
 {
+    public int? BiddingNumber { get; set; }
+
 	public int OrderId { get; set; }
 	public Guid? OrderGuid { get; set; }
 }
\ No newline at end of file
diff --git a/Nop.Plugin.Misc.AuctionPlugin/Domains/Entities/ProductToAuctionMapping.cs b/Nop.Plugin.Misc.AuctionPlugin/Domains/Entities/ProductToAuctionMapping.cs
index 22e7858..adcd658 100644
--- a/Nop.Plugin.Misc.AuctionPlugin/Domains/Entities/ProductToAuctionMapping.cs
+++ b/Nop.Plugin.Misc.AuctionPlugin/Domains/Entities/ProductToAuctionMapping.cs
@@ -17,7 +17,7 @@ public partial class ProductToAuctionMapping : MgEntityBase, IProductToAuctionMa
     public int OrderId { get; set; }
     public Guid? OrderGuid { get; set; }
     public int WinnerCustomerId { get; set; }
-    public string BiddingNumber { get; set; }
+    public int? BiddingNumber { get; set; }
 
     [NotMapped]
     [NotColumn]
diff --git a/Nop.Plugin.Misc.AuctionPlugin/Services/AuctionService.cs b/Nop.Plugin.Misc.AuctionPlugin/Services/AuctionService.cs
index 66fdd3d..32fc9de 100644
--- a/Nop.Plugin.Misc.AuctionPlugin/Services/AuctionService.cs
+++ b/Nop.Plugin.Misc.AuctionPlugin/Services/AuctionService.cs
@@ -15,6 +15,7 @@ using Nop.Core.Domain.Common;
 using Nop.Services.Common;
 using Nop.Services.Customers;
 using Nop.Services.Shipping;
+using NUglify.Helpers;
 
 namespace Nop.Plugin.Misc.AuctionPlugin.Services;
 
@@ -256,6 +257,7 @@ public class AuctionService(
                 OrderTotal = productToAuction.CurrentPrice,
             };
             processPaymentRequest.CustomValues.Add("TÉTEL: ", $"#{productToAuction.SortIndex}");
+            if (productToAuction.BiddingNumber != null) processPaymentRequest.CustomValues.Add("BIDNUM", $"#{productToAuction.BiddingNumber}");
             processPaymentRequest.CustomValues.Add("PTAID", $"#{productToAuction.Id}");
 
             var product = await productService.GetProductByIdAsync(productToAuction.ProductId);