How to use VS Code CPP formatter on CAPL files

I am working on several CAPL source code files with VS Code. CAPL is a C-Style scripting language used by Vector Diagnostics Tools (Automotive).

For Syntax highlighting I am using a plugin for VSCode (kmasif.capl-vector).

If I press CTRL+Shift+P and enter "format", VS code complains that no formatter for CAPL is installed.

I already tried to add following to settings-json, without success:

    "[capl]":{
        "editor.defaultFormatter": "ms-vscode.cpptools"
    },
    "[cin]":{
        "editor.defaultFormatter": "ms-vscode.cpptools"
    },
    "[can]":{
        "editor.defaultFormatter": "ms-vscode.cpptools"
    },

How can I enable formatting for these source code files, while using syntax highlighting from CAPL plugin?