BuddyPress Show if User has New Private Messages

gistfile1.txt

/* This code goes into one of the WC Vendors Templates.  Which one?  Depends where you want to show it on the dashboard. :) */

/* Shows unread messages button */
$unread = bp_get_total_unread_messages_count();
$current_user = wp_get_current_user();
if ( $unread > 0 ) {
    echo '<a href="/members/' . $current_user->user_login . '/messages/">You have ' . $unread . ' Unread Private Messages</a>';
}