acf filters for json save point

[v3nt]

Hello - is there any reason why this won't work in the Structure/ACF/settings.php file?

add_filter('acf/settings/save_json', 'Tonik\Theme\App\Structure\ACF\my_acf_json_save_point');

function my_acf_json_save_point( $path ) {

    // update path
    $path = get_stylesheet_directory() . '/resources/assets/acf-json';

    //this works
    file_put_contents($path.'/test.txt', $path);

    // return
    return $path;

}

thanks