Visual Studio Code – How to expand the current CMake build type in Visual Studio's launch.vs.json?

This is not about Visual Studio Code. It’s not about launch.json. This question is about Visual Studio and its launch.vs.json file.

In VS 2022’s launch.vs.json file, in a custom debug target, how can I reference the current CMake build type? I need something like this:

{
  "version": "0.2.1",
  "defaults": {},
  "configurations": [
    {
      "type": "default",
      "project": "CMakeLists.txt",
      "projectTarget": "MyProgram.exe (app\MyProgram\MyProgram.exe)",
      "name": "MyProgram.exe (app\MyProgram\MyProgram.exe)",
      "environment": [
        {
          "name": "PATH",
          "value": "D:\my-dlls-for-build-type-${cmake.buildType}"
        }
      ]
    }
  ]
}

But ${cmake.buildType} is not recognized here. I get this error: Var:${cmake.buildType} failed evaluation.