diff --git a/framework/src/Bing.Logging/Bing/Logging/Log.cs b/framework/src/Bing.Logging/Bing/Logging/Log.cs
index 19440e36..655aced3 100644
--- a/framework/src/Bing.Logging/Bing/Logging/Log.cs
+++ b/framework/src/Bing.Logging/Bing/Logging/Log.cs
@@ -269,7 +269,10 @@ protected virtual void ConvertStateToContent()
         {
             if (item.Value.SafeString().IsEmpty())
                 continue;
-            LogProperties.Add(item.Key, item.Value);
+            if (LogProperties.ContainsKey(item.Key)) 
+                LogProperties[item.Key] = item.Value;
+            else
+                LogProperties.Add(item.Key, item.Value);
         }
     }
 
diff --git a/framework/tests/Bing.Logging.Serilog.Tests/LogTest.cs b/framework/tests/Bing.Logging.Serilog.Tests/LogTest.cs
index 0a98631a..c66a92e1 100644
--- a/framework/tests/Bing.Logging.Serilog.Tests/LogTest.cs
+++ b/framework/tests/Bing.Logging.Serilog.Tests/LogTest.cs
@@ -113,8 +113,9 @@ public void Test_LogTrace_Message_9()
         _log.EventId(119)
             .Message("Test_LogTrace_Message_9_{id}", $"id_{Id.NewString()}")
             .State(new Product { Code = "a", Name = "b", Price = 123 })
-            .Property("Age","18")
-            .Property("Description","hello")
+            .Property("Code", "a")
+            .Property("Age", "18")
+            .Property("Description", "hello")
             .LogTrace();
     }
 
@@ -142,4 +143,4 @@ public void Test_LogTrace_Property_2()
             .State(new Product { Code = "a", Name = "b", Price = 123 })
             .LogTrace();
     }
-}
\ No newline at end of file
+}
diff --git a/version.props b/version.props
index e3c32d2f..3afef173 100644
--- a/version.props
+++ b/version.props
@@ -2,7 +2,7 @@
   <PropertyGroup>
     <VersionMajor>2</VersionMajor>
     <VersionMinor>2</VersionMinor>
-    <VersionPatch>7</VersionPatch>
+    <VersionPatch>8</VersionPatch>
     <VersionQuality>20221020-1</VersionQuality>
     <VersionPrefix>$(VersionMajor).$(VersionMinor).$(VersionPatch)</VersionPrefix>
     <!--<VersionSuffix>preview-$(VersionQuality)</VersionSuffix>-->