Google Fonts Missing?

I have found the topic on the forum but hen I add:

add_filter( ‘avf_google_heading_font’, ‘avia_add_heading_font’);
function avia_add_heading_font($fonts)
{
$fonts[‘Alegreya Sans’] = ‘Alegreya Sans:500,700,800,900’;
$fonts[‘Alegreya Sans’] = ‘Alegreya Sans:500,500italic,700,700italic,800,800italic,900,900italic,italic’;
return $fonts;
}

it does not show the font in the dropdown.. :( Any idea? This is the front I’m trying to add http://www.google.com/fonts/specimen/Alegreya+Sans

Thank you!