HELP! Can't add Houzz icon to Enfold social profile options

Hi!
In a precedant thread I achieve to add the Houzz icon. But since I made the update of the theme and WordPress and the changes on the file functions.php where modified.

Now I tryied to add again the following code (explained in the precedant thread) to be able to add Houzz icon to my site but doesnt work:

// Register new icon as a theme icon
function avia_add_custom_icon($icons) {
$icons[‘houzz’] = array( ‘font’ =>’icon-houzz’, ‘icon’ => ‘ue800’);
return $icons;
}
add_filter(‘avf_default_icons’,’avia_add_custom_icon’, 10, 1);

// Add new icon as an option for social icons
function avia_add_custom_social_icon($icons) {
$icons[‘Houzz’] = ‘houzz’;
return $icons;
}
add_filter(‘avf_social_icons_options’,’avia_add_custom_social_icon’, 10, 1);

Where do I make the mistake? Where do I have to add this code in the functions.php file? Because I add it at the end and it didn’t work.

Thank you!