Resize Tag Cloud Minimum font

Thank you! for helping me find that!

I put the code in my functions.php child theme and worked perfectly.

I had this code in there previously and it didn’t work:

add_filter('widget_tag_cloud_args', 'tag_cloud_filter', 90);
function tag_cloud_filter($args = array()) {
 $args['smallest'] = 8;
 $args['largest'] = 13;
 $args['unit'] = 'pt';
 return $args;
}

But this one (from the article above did):

add_filter('widget_tag_cloud_args','set_tag_cloud_sizes');
function set_tag_cloud_sizes($args) {
$args['smallest'] = 12;
$args['largest'] = 19;
return $args; }

I’m not good with PHP