Is somebody able to customize label using JS options ?

[PubliAlex]

Here is my code :

// Twenty Twenty

    $(".twentytwenty-container").twentytwenty({
        default_offset_pct: 0.5,
        orientation: 'horizontal',
        before_label: 'LABEL AVANT',
        after_label: 'LABEL APRES',
        move_slider_on_hover: false,
        move_with_handle_only: false,
        click_to_move: true,
  });

Doesn't work, I don't see label at all... any ideas ?