How to activate the pretty printing of GDB with VScode?

I configured my launch.json file in VScode to use gdb with the pretty printing.

{
    // Use IntelliSense to learn about possible attributes.
    // Hover to view descriptions of existing attributes.
    "version": "0.2.0",
    "configurations": [
        {
            "name": "(gdb) Launch program",
            "type": "cppdbg",
            "request": "launch",
            "program": "~/bin/program",
            "stopAtEntry": false,
            "externalConsole": false,
            "MIMode": "gdb",
            "setupCommands": [
                {
                    "description": "Enable pretty-printing for gdb",
                    "text": "-enable-pretty-printing",
                    "ignoreFailures": true
                }
            ]
        }
    ]
}

Unfortunately, it doesn't work and a lot of variables contains weird attributes like __d, __r, px, pn,... that I can't understand.