Edit "Portfolio Categories" Custom Taxonomy

Hi,

I need to change the default name of the ‘menu_name’ in the Custom Taxonomies, since my website supports different languages. The code in the plugin is

// "Portfolio Categories" Custom Taxonomy
    $labels = array(
    	'name' => __( 'Portfolio Categories', 'otw_pfl' ),
    	'singular_name' => __( 'Portfolio Category', 'otw_pfl' ),
    	'search_items' =>  __( 'Search Portfolio Categories', 'otw_pfl' ),
    	'all_items' => __( 'All Portfolio Categories', 'otw_pfl' ),
    	'parent_item' => __( 'Parent Portfolio Category', 'otw_pfl' ),
    	'parent_item_colon' => __( 'Parent Portfolio Category:', 'otw_pfl' ),
    	'edit_item' => __( 'Edit Portfolio Category', 'otw_pfl' ),
    	'update_item' => __( 'Update Portfolio Category', 'otw_pfl' ),
    	'add_new_item' => __( 'Add New Portfolio Category', 'otw_pfl' ),
    	'new_item_name' => __( 'New Portfolio Category Name', 'otw_pfl' ),
    	'menu_name' => __( 'Portfolio Categories', 'otw_pfl' )
    );

Even if I change the ‘menu_name’ to ‘Categoría’ or any other word, it still shows ‘Portfolio Categories’ instead. Why this change doesn’t apply?

Many thanks in advance for your help.

https://wordpress.org/plugins/otw-portfolio-light/