Footer Menu depth

Hello! thanks for your theme!
I’ve tried to add depth by 2 in the footer menu, however it doesn’t change.

What could I do to make a footer tree nav (depth 2) in columns?

<?php
wp_nav_menu( array( ‘theme_location’ => ‘footer-menu’, ‘menu_class’ => ‘list-inline’, ‘depth’ =>2, ‘container’ => false, ‘fallback_cb’ => false ) );
?>