diff --git a/ml-deep-dives.sln b/ml-deep-dives.sln
index 485565d..9714887 100644
--- a/ml-deep-dives.sln
+++ b/ml-deep-dives.sln
@@ -10,17 +10,27 @@ EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
+		Debug|x64 = Debug|x64
 		Release|Any CPU = Release|Any CPU
+		Release|x64 = Release|x64
 	EndGlobalSection
 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
 		{E49D0825-05C3-4238-9A02-F2D2CE37FDA1}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{E49D0825-05C3-4238-9A02-F2D2CE37FDA1}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{E49D0825-05C3-4238-9A02-F2D2CE37FDA1}.Debug|x64.ActiveCfg = Debug|x64
+		{E49D0825-05C3-4238-9A02-F2D2CE37FDA1}.Debug|x64.Build.0 = Debug|x64
 		{E49D0825-05C3-4238-9A02-F2D2CE37FDA1}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{E49D0825-05C3-4238-9A02-F2D2CE37FDA1}.Release|Any CPU.Build.0 = Release|Any CPU
+		{E49D0825-05C3-4238-9A02-F2D2CE37FDA1}.Release|x64.ActiveCfg = Release|x64
+		{E49D0825-05C3-4238-9A02-F2D2CE37FDA1}.Release|x64.Build.0 = Release|x64
 		{033419BC-C20C-41B8-8945-43C4C8ACFDB8}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{033419BC-C20C-41B8-8945-43C4C8ACFDB8}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{033419BC-C20C-41B8-8945-43C4C8ACFDB8}.Debug|x64.ActiveCfg = Debug|x64
+		{033419BC-C20C-41B8-8945-43C4C8ACFDB8}.Debug|x64.Build.0 = Debug|x64
 		{033419BC-C20C-41B8-8945-43C4C8ACFDB8}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{033419BC-C20C-41B8-8945-43C4C8ACFDB8}.Release|Any CPU.Build.0 = Release|Any CPU
+		{033419BC-C20C-41B8-8945-43C4C8ACFDB8}.Release|x64.ActiveCfg = Release|x64
+		{033419BC-C20C-41B8-8945-43C4C8ACFDB8}.Release|x64.Build.0 = Release|x64
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
diff --git a/mldeepdivelib/mldeepdivelib.csproj b/mldeepdivelib/mldeepdivelib.csproj
index 84ad945..e5b55ed 100644
--- a/mldeepdivelib/mldeepdivelib.csproj
+++ b/mldeepdivelib/mldeepdivelib.csproj
@@ -2,6 +2,7 @@
 
   <PropertyGroup>
     <TargetFramework>netcoreapp3.0</TargetFramework>
+    <Platforms>AnyCPU;x64</Platforms>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/mlregression/Structures/EmploymentHistory.cs b/mlregression/Structures/EmploymentHistory.cs
index c1c8495..55cd6c0 100644
--- a/mlregression/Structures/EmploymentHistory.cs
+++ b/mlregression/Structures/EmploymentHistory.cs
@@ -6,7 +6,7 @@ public class EmploymentHistory
     {
         public string PositionName { get; set; }
 
-        [Label(1, 150)]
+        [Label(0, 150)]
         public float DurationInMonths { get; set; }
 
         public float IsMarried { get; set; }
diff --git a/mlregression/mlregression.csproj b/mlregression/mlregression.csproj
index fd69511..d4d4b6d 100644
--- a/mlregression/mlregression.csproj
+++ b/mlregression/mlregression.csproj
@@ -3,6 +3,17 @@
   <PropertyGroup>
     <OutputType>Exe</OutputType>
     <TargetFramework>netcoreapp3.0</TargetFramework>
+    <Platforms>AnyCPU;x64</Platforms>
+  </PropertyGroup>
+
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
+    <PlatformTarget>x64</PlatformTarget>
+    <Prefer32Bit>false</Prefer32Bit>
+  </PropertyGroup>
+
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <PlatformTarget>x64</PlatformTarget>
+    <Prefer32Bit>false</Prefer32Bit>
   </PropertyGroup>
 
   <ItemGroup>