diff --git a/tools/data-mapper/Microsoft.Health.Tools.DataMapper.sln b/tools/data-mapper/Microsoft.Health.Tools.DataMapper.sln
index 92e7ebd5..6cabf21e 100644
--- a/tools/data-mapper/Microsoft.Health.Tools.DataMapper.sln
+++ b/tools/data-mapper/Microsoft.Health.Tools.DataMapper.sln
@@ -28,6 +28,10 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Microsoft.Health.Extensions
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Microsoft.Health.Extensions.Fhir", "..\..\src\lib\Microsoft.Health.Extensions.Fhir\Microsoft.Health.Extensions.Fhir.csproj", "{B5B2B388-C59C-4CBF-9EF0-F0E2CA47EF7F}"
 EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Microsoft.Health.Events", "..\..\src\lib\Microsoft.Health.Events\Microsoft.Health.Events.csproj", "{860EBEEC-5038-4337-A8CC-8B9E122D0840}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Microsoft.Health.Logging", "..\..\src\lib\Microsoft.Health.Logger\Microsoft.Health.Logging.csproj", "{F77B4296-932B-4F17-8709-7F30CBD2FDDF}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -70,6 +74,14 @@ Global
 		{B5B2B388-C59C-4CBF-9EF0-F0E2CA47EF7F}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{B5B2B388-C59C-4CBF-9EF0-F0E2CA47EF7F}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{B5B2B388-C59C-4CBF-9EF0-F0E2CA47EF7F}.Release|Any CPU.Build.0 = Release|Any CPU
+		{860EBEEC-5038-4337-A8CC-8B9E122D0840}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{860EBEEC-5038-4337-A8CC-8B9E122D0840}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{860EBEEC-5038-4337-A8CC-8B9E122D0840}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{860EBEEC-5038-4337-A8CC-8B9E122D0840}.Release|Any CPU.Build.0 = Release|Any CPU
+		{F77B4296-932B-4F17-8709-7F30CBD2FDDF}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{F77B4296-932B-4F17-8709-7F30CBD2FDDF}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{F77B4296-932B-4F17-8709-7F30CBD2FDDF}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{F77B4296-932B-4F17-8709-7F30CBD2FDDF}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
diff --git a/tools/data-mapper/README.md b/tools/data-mapper/README.md
index cd94459c..f32e456d 100644
--- a/tools/data-mapper/README.md
+++ b/tools/data-mapper/README.md
@@ -89,6 +89,10 @@ This tool is built with ReactJS. It requires Npm dependencies to build and run.
 
    You may see the site is not secure because of the certificate used on the localhost. Since the tool should not handle any critical data and there is not any other internet connection, you can move forward in your browser.
 
+5. (Optional) You can use your Visual Studio to run the tool as well, and make your own changes.
+
+   You can load the solution ```Microsoft.Health.Tools.DataMapper.sln``` in your Visual Studio and start or debug the project ```Microsoft.Health.Tools.DataMapper``` after step #2 above. You may want to terminate the running process from Step #3 to avoid from conflicting port.
+
 ### How to Make Mappings
 
 1. Make sure you have read the introduction of [IoMT FHIR Connector for Azure](https://github.com/microsoft/iomt-fhir) and understand the purpose of its [configuration](https://github.com/microsoft/iomt-fhir/blob/master/docs/Configuration.md).