Adding More Google Fonts

I would like to add the Roboto Condensed font to the Enfold theme.

I used this method and added code to my functions.php in my child theme:

add_filter( ‘avf_google_heading_font’, ‘avia_add_heading_font’);
function avia_add_heading_font($fonts)
{

$fonts[‘Roboto Condensed’] = ”Roboto Condensed:300,300italic,400,400italic,700,700italic’;
return $fonts;
}

add_filter( ‘avf_google_content_font’, ‘avia_add_content_font’);
function avia_add_content_font($fonts)
{

$fonts[‘Roboto Condensed’] = ‘Roboto Condensed:300,300italic,400,400italic,700,700italic’;
return $fonts;
}

Google Fonts says to use Roboto+Condensed, and I tried with the + and without

When the font is added, it appears to work for most content, but on headings it’s not working properly, but if inspect element and remove the +, then the font works.

Not sure what the correct implementation is, or what I might be doing wrong.