Font not changed

Hi to all
I’m trying to change the default font in a Ionic v1 application but the new font is not used.

I’ve installed open-sans-fontface with bower:

bower install open-sans-fontface

then i’ve placed the following lines in scss/ file (i’m using sass and the rest of variables inside this file are used properly)

@import "www/lib/open-sans-fontface/open-sans.scss";

$font-family-base: 'Open Sans';
$font-family-sans-serif: 'Open Sans';
$font-family-light-sans-serif: 'Open Sans Light';

With Chrome inspector I can see the font file loaded properly, but even by setting style='font-family: "Open Sans" attribute manually on a tag, the font is not changed.