Adding a Bilingual Header Widget Area.

Referring to the link here:

Can this be done on a bilingual site?

Here is what I’ve added to functions.php in my child theme:

//--------------------------------
// English Header widget area
//--------------------------------
add_action( 'ava_after_main_menu', 'enfold_customization_header_widget_area' );
function enfold_customization_header_widget_area() {
dynamic_sidebar( 'header' );
}

How can I make a Spanish version on the same site? We use WPML.
Thank you.