SOCIAL SHARE BUTTONS …..& ADDITIONAL ICONS

Hi there
I am a following your below instructions to add an icon among the social media icons in the top header:

but I can’t make it to work for icon=’ue854′ font=’entypo-fontello’ which I do have in my media library, but for a reason that I ignore I am not given the opportunity to select it among the social icons.
Thx

// Register new icon as a theme icon
function avia_add_custom_icon($icons) {
$icons[‘icon_name’] = array( ‘font’ =>’fontello’, ‘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[‘Icon Label’] = ‘icon_name’;
return $icons;
}
add_filter(‘avf_social_icons_options’,’avia_add_custom_social_icon’, 10, 1);