diff --git a/B3ClientService/Rpcs/BillRpc/GradeAndWeightRpc.cs b/B3ClientService/Rpcs/BillRpc/GradeAndWeightRpc.cs
index 6866604..bbf2c66 100644
--- a/B3ClientService/Rpcs/BillRpc/GradeAndWeightRpc.cs
+++ b/B3ClientService/Rpcs/BillRpc/GradeAndWeightRpc.cs
@@ -7,6 +7,7 @@ using Forks.EnterpriseServices.DomainObjects2;
 using Forks.EnterpriseServices.DomainObjects2.DQuery;
 using Forks.EnterpriseServices.JsonRpc;
 using Forks.EnterpriseServices.SqlDoms;
+using Newtonsoft.Json;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -69,8 +70,8 @@ namespace BWP.B3ClientService.Rpcs.BillRpc
     {
       lock (_lock)
       {
-        json = json.ESerializeDateTime();
-        var entity = serializer.Deserialize<GradeAndWeight_Detail>(json);
+        //json = json.ESerializeDateTime();
+        var entity = JsonConvert.DeserializeObject<GradeAndWeight_Detail>(json);
         using (var session = Dmo.NewSession())
         {
           if (entity.IsDeleted)