diff --git a/HKCardOUT/ViewModels/AdWindowViewModel.cs b/HKCardOUT/ViewModels/AdWindowViewModel.cs
index 28d3537..213d730 100644
--- a/HKCardOUT/ViewModels/AdWindowViewModel.cs
+++ b/HKCardOUT/ViewModels/AdWindowViewModel.cs
@@ -10,6 +10,7 @@ using System.Linq;
 using System.Threading;
 using System.Windows.Media;
 using HKControl;
+using System.Collections.Concurrent;
 
 namespace HKCardOUT.ViewModels
 {
@@ -101,6 +102,8 @@ namespace HKCardOUT.ViewModels
             get => _Foods;
             set => SetAndNotify(ref _Foods, value);
         }
+
+        ConcurrentQueue<SaleLogDto> saleLogDtos { get; set; }
         #endregion