Tag meta_key/meta_value (custom field)

Hello, i am using ACF (Advanced Custom Fields) plugin to create 1 custom field whit 2 variables.

Tag -> subject (my custom field) -> “book” “author” (my 2 variables)
All my tags has one or another variable.

This code works and displays all tag whit custom field variable “book”:

$tags = get_tags( array('meta_key'  => 'subject', 'meta_value'  => 'book') );
foreach( $tags as $tag ) {
echo $tag->name;
}

any chance to combine output whit get_the_a_z_listing(); ?

Thanks!