❔ MSBuild is it possible to set a additonal property?

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <TargetFramework>net5.0</TargetFramework>

    <!-- Define a default value for EnableMyFeature, can be overridden by referencing project -->
    <EnableMyFeature>false</EnableMyFeature>
  </PropertyGroup>

  <PropertyGroup Condition="'$(EnableMyFeature)' == 'true'">
    <DefineConstants>$(DefineConstants);MY_CONSTANT</DefineConstants>
  </PropertyGroup>

  <!-- ... -->
</Project>

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>net5.0</TargetFramework>

    <!-- Override EnableMyFeature here -->
    <EnableMyFeature>true</EnableMyFeature>
  </PropertyGroup>

  <ItemGroup>
    <ProjectReference Include="path/to/LibraryProject.csproj">
      <AdditionalProperties>EnableMyFeature=$(EnableMyFeature)</AdditionalProperties>
    </ProjectReference>
  </ItemGroup>

  <!-- ... -->
</Project>

    <PackageReference Include="Microsoft.Build" Version="17.7.2" />