How can I use a boolean value coming from container environment variable in Visual Studio Code settings?

I’m currently using container environment variables (exported by my docker-entrypoint.sh) to configure Visual Studio Code settings and it works perfectly with string values:

{
    "intelephense.environment.phpVersion": "${containerEnv:PHP_VERSION}",
}

However, when the values must be of type number or boolean, an issue arises (DB_ASK_PASSWORD contains either true or false). In fact, I’m forced to wrap the value into double quotes, producing an invalid number or boolean:

{
    "sqltools.connections": [
        {
          "port": "${containerEnv:DB_HOST}",
          "askForPassword": "${containerEnv:DB_ASK_PASSWORD}"
        }
    ]
}

Even if, in this specific case, port could work (for internal type conversion), askForPassword cannot. Being wrapped by double quotes, the "false" text is interpreted as as truthy value.

Is there any way to accomplish what I’m asking? Removing the quotes does not help either:

{
    "sqltools.connections": [
        {
          "askForPassword": ${containerEnv:DB_ASK_PASSWORD}
        }
    ]
}