diff --git a/.github/workflows/build-branch-TermRewriting.yml b/.github/workflows/build-branch-TermRewriting.yml
new file mode 100644
index 0000000..7f0deec
--- /dev/null
+++ b/.github/workflows/build-branch-TermRewriting.yml
@@ -0,0 +1,22 @@
+name: branch TermRewriting
+
+on:
+  push:
+    branches: 
+      - feature/TermRewriting
+   
+jobs:
+  build:    
+
+    runs-on: windows-latest
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Setup .NET Core
+      uses: actions/setup-dotnet@v1
+      with:
+        dotnet-version: 2.2.108
+    - name: Run Tests
+      run: dotnet test      
+    - name: Build with dotnet
+      run: dotnet build .\ThinkSharp.FormulaParser\ThinkSharp.FormulaParser.csproj --configuration Release
diff --git a/.github/workflows/build-dev.yml b/.github/workflows/build-dev.yml
new file mode 100644
index 0000000..51d6721
--- /dev/null
+++ b/.github/workflows/build-dev.yml
@@ -0,0 +1,23 @@
+name: .NET Core
+
+on:
+  push:
+    branches: 
+      - develop
+   
+jobs:
+  build:    
+
+    runs-on: windows-latest
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Setup .NET Core
+      uses: actions/setup-dotnet@v1
+      with:
+        dotnet-version: 2.2.108
+    - name: Run Tests
+      run: dotnet test      
+    - name: Build with dotnet
+      run: dotnet build .\ThinkSharp.FormulaParser\ThinkSharp.FormulaParser.csproj --configuration Release
+    
diff --git a/README.md b/README.md
index 19afe4d..e6925f8 100644
--- a/README.md
+++ b/README.md
@@ -41,7 +41,7 @@ var variables = new Dictionary<string, double> { ["x"] = 2.0 };
 var result2 = parser.Evaluate("1+x", variables).Value; // result2 = 3.0
     
 // Usage of functions
-var result3 = parser.Evaluate("1+min(3,4)").Value; // result2 = 4.0
+var result3 = parser.Evaluate("1+min(3,4)").Value; // result3 = 4.0
     
 // Handle errors
 var parsingResult = parser.Evaluate("2*?");
@@ -93,17 +93,18 @@ var parser = FormulaParser
     {
         // functions.RemoveAll()    for removing all default functions
         // functions.Remove("sum")  for removing function by name
-        // define function with 2 to n number of parameters (typeof(nums) = double[])
-        functions.Add("product", nums => nums.Aggregate((p1, p2) => p1 * p2));
 
-        // define functions with specified number of parameters (1-5 parameters are supported)
+        // define functions with certain number of parameters (1-5 parameters are supported)
         functions.Add("celsiusToFarenheit", celsius => celsius * 1.8 + 32);
         functions.Add("fahrenheitToCelsius", fahrenheit => (fahrenheit - 32) * 5 / 9);
         functions.Add("p1_plus_p2_plus_p3", (p1, p2, p3) => p1 + p2 + p3);
+        
+        // define function with 2 to n number of parameters (typeof(nums) = double[])
+        functions.Add("product", nums => nums.Aggregate((p1, p2) => p1 * p2));
     }).Build();
 
 var poolTemperatureInCelsius = parser.Evaluate("celsiusToFarenheit(fahrenheitToCelsius(30))").Value; // poolTemperatureInCelsius = 30
-var result2 = parser.Evaluate("product(2, 2, 2, 2, 2, 2, 2)").Value;    // result2 = 2^6 = 128
+var result2 = parser.Evaluate("product(2, 2, 2, 2, 2, 2)").Value;    // result2 = 2^6 = 128
 var result3 = parser.Evaluate("p1_plus_p2_plus_p3(1, 2, 3)").Value;     // result3 = 6
 
 string error1 = parser.Evaluate("celsiusToFarenheit(1, 2)").Error;      // column 0: There is no function 'celsiusToFarenheit' that takes 2 argument(s).
diff --git a/ThinkSharp.FormulaParser.Test.Core/FormularParser.NumberFormats.Test.cs b/ThinkSharp.FormulaParser.Test.Core/FormularParser.NumberFormats.Test.cs
index 93d1ec2..fb620ff 100644
--- a/ThinkSharp.FormulaParser.Test.Core/FormularParser.NumberFormats.Test.cs
+++ b/ThinkSharp.FormulaParser.Test.Core/FormularParser.NumberFormats.Test.cs
@@ -1,8 +1,10 @@
 using Microsoft.VisualStudio.TestTools.UnitTesting;
 using System;
 using System.Collections.Generic;
+using System.Globalization;
 using System.Linq;
 using System.Text;
+using System.Threading;
 using System.Threading.Tasks;
 using ThinkSharp.FormulaParsing.Ast.Nodes;
 using ThinkSharp.FormulaParsing.Ast.Visitors;
@@ -50,7 +52,19 @@ public void TestDecimalNotation()
             Assert.AreEqual(202.0, parser.Evaluate("0d101 + 101").Value);
         }
 
-        [TestMethod]
+    [TestMethod]
+    public void TestDifferentCultures()
+    {
+      var parser = FormulaParser.Create();
+
+      Thread.CurrentThread.CurrentCulture = new CultureInfo("de-DE");
+      Assert.AreEqual(0.1, parser.Evaluate("0.1").Value);
+
+      Thread.CurrentThread.CurrentCulture = new CultureInfo("en-US");
+      Assert.AreEqual(0.1, parser.Evaluate("0.1").Value);
+    }
+
+    [TestMethod]
         [Ignore]
         public void TestScientificNotation()
         {
diff --git a/ThinkSharp.FormulaParser.Test.Core/ThinkSharp.FormulaParser.Test.csproj b/ThinkSharp.FormulaParser.Test.Core/ThinkSharp.FormulaParser.Test.csproj
index 232823b..4648127 100644
--- a/ThinkSharp.FormulaParser.Test.Core/ThinkSharp.FormulaParser.Test.csproj
+++ b/ThinkSharp.FormulaParser.Test.Core/ThinkSharp.FormulaParser.Test.csproj
@@ -1,9 +1,10 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp2.0</TargetFramework>
+    <TargetFramework>net7.0</TargetFramework>
 
     <IsPackable>false</IsPackable>
+		<IsTestProject>true</IsTestProject>
 
     <AssemblyName>ThinkSharp.FormulaParser.Test.Core</AssemblyName>
 
@@ -11,9 +12,9 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.0.1" />
-    <PackageReference Include="MSTest.TestAdapter" Version="1.4.0" />
-    <PackageReference Include="MSTest.TestFramework" Version="1.4.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.9.0" />
+    <PackageReference Include="MSTest.TestAdapter" Version="3.3.1" />
+    <PackageReference Include="MSTest.TestFramework" Version="3.3.1" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/ThinkSharp.FormulaParser/ANTLR/AntlrToAstNodesGrammerTreeVisitor.cs b/ThinkSharp.FormulaParser/ANTLR/AntlrToAstNodesGrammerTreeVisitor.cs
index 6f0a097..381423f 100644
--- a/ThinkSharp.FormulaParser/ANTLR/AntlrToAstNodesGrammerTreeVisitor.cs
+++ b/ThinkSharp.FormulaParser/ANTLR/AntlrToAstNodesGrammerTreeVisitor.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Globalization;
 using Antlr4.Runtime.Misc;
 using ThinkSharp.FormulaParsing.Ast.Nodes;
 
@@ -131,7 +132,7 @@ public override Node VisitAtom([NotNull] FormulaGrammerParser.AtomContext contex
 
         //    //var pow = new PowerNode(new IntegerNode("10", 10), exponentNumber);
         //    //return new BinaryOperatorNode(BinaryOperator.BySymbol("*"), baseNumber, exponentNumber);
-        //    return new DecimalNode(scientificNumber, double.Parse(scientificNumber));
+        //    return new DecimalNode(scientificNumber, double.Parse(scientificNumber.Parse));
         //}
 
         public override Node VisitPrefixedIntNumber([NotNull] FormulaGrammerParser.PrefixedIntNumberContext context)
@@ -154,7 +155,7 @@ public override Node VisitPrefixedBinNumber([NotNull] FormulaGrammerParser.Prefi
         public override Node VisitPrefixedDecNumber([NotNull] FormulaGrammerParser.PrefixedDecNumberContext context)
         {
             var token = context.PREFIX_DEC_NUMBER().Symbol.Text;
-            return new DecimalNode(double.Parse(token.Substring(2)));
+            return new DecimalNode(double.Parse(token.Substring(2), CultureInfo.InvariantCulture));
         }
 
         public override Node VisitPrefixedHexNumber([NotNull] FormulaGrammerParser.PrefixedHexNumberContext context)
@@ -182,13 +183,13 @@ public override Node VisitPrefixedOctNumber([NotNull] FormulaGrammerParser.Prefi
         public override Node VisitDecimalNumber([NotNull] FormulaGrammerParser.DecimalNumberContext context)
         {
             var token = context.DECIMAL_NUMBER().Symbol.Text;
-            return new DecimalNode(double.Parse(token));
+            return new DecimalNode(double.Parse(token, CultureInfo.InvariantCulture));
         }
 
         public override Node VisitIntgerNumber([NotNull] FormulaGrammerParser.IntgerNumberContext context)
         {
             var token = context.INTEGER_NUMBER().Symbol.Text;
-            return new IntegerNode(NumberFormat.Dec, long.Parse(token));
+            return new IntegerNode(NumberFormat.Dec, long.Parse(token, CultureInfo.InvariantCulture));
         }
 
         public override Node VisitVariable([NotNull] FormulaGrammerParser.VariableContext context)
diff --git a/ThinkSharp.FormulaParser/ThinkSharp.FormulaParser.csproj b/ThinkSharp.FormulaParser/ThinkSharp.FormulaParser.csproj
index 3b48427..b556f14 100644
--- a/ThinkSharp.FormulaParser/ThinkSharp.FormulaParser.csproj
+++ b/ThinkSharp.FormulaParser/ThinkSharp.FormulaParser.csproj
@@ -8,16 +8,17 @@
     <Authors>Jan-Niklas Schäfer</Authors>
     <Company>ThinkSharp</Company>
     <Description>A formula parser with fluent API that allows parsing and evaluation of mathematically formulas. Features: functions, constants, variables, scientific numbers, focus on customization and flexibility.</Description>
-    <Copyright>© 2020 Jan-Niklas Schäfer</Copyright>
-    <AssemblyVersion>0.9.0.0</AssemblyVersion>
-    <FileVersion>0.9.0.0</FileVersion>
+    <Copyright>© 2020-2024 Jan-Niklas Schäfer</Copyright>
+    <AssemblyVersion>0.10.0.0</AssemblyVersion>
+    <FileVersion>0.10.0.0</FileVersion>
     <PackageLicenseFile>LICENSE.txt</PackageLicenseFile>
     <PackageReleaseNotes>Removed term rewriting functionality (has been moved to its own project)
-    </PackageReleaseNotes>
+ 0.10.0 Bugfix: decimal parsing should not depend on OS Culture</PackageReleaseNotes>
     <PackageProjectUrl>https://github.com/JanDotNet/ThinkSharp.FormulaParser</PackageProjectUrl>
     <PackageRequireLicenseAcceptance>true</PackageRequireLicenseAcceptance>
-    <Version>0.9.0</Version>
+    <Version>0.10.0</Version>
     <PackageLicenseExpression></PackageLicenseExpression>
+    <PackageReadmeFile>README.md</PackageReadmeFile>
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
@@ -32,6 +33,10 @@
       <Pack>True</Pack>
       <PackagePath></PackagePath>
     </None>
+    <None Include="..\README.md">
+      <Pack>True</Pack>
+      <PackagePath>\</PackagePath>
+    </None>
   </ItemGroup>
 
   <ItemGroup>