diff --git a/src/Plugins/BotSharp.Plugin.MongoStorage/Collections/UserDocument.cs b/src/Plugins/BotSharp.Plugin.MongoStorage/Collections/UserDocument.cs
index ffcd71a2..d76ec389 100644
--- a/src/Plugins/BotSharp.Plugin.MongoStorage/Collections/UserDocument.cs
+++ b/src/Plugins/BotSharp.Plugin.MongoStorage/Collections/UserDocument.cs
@@ -18,6 +18,7 @@ public class UserDocument : MongoBase
     public string Role { get; set; } = null!;
     public string? VerificationCode { get; set; }
     public bool Verified { get; set; }
+    public string? RegionCode { get; set; }
     public string? AffiliateId { get; set; }
     public bool IsDisabled { get; set; }
     public DateTime CreatedTime { get; set; }