Mansory blog read more

Hi, I tried adding this to function.php to increase the characters and show the read more button:

add_filter(‘avf_masonry_excerpt_length’,’avia_change_masonry_excerpt_length’, 10, 1);
function avia_change_masonry_excerpt_length($length)
{
return 170;
}

add_filter(‘avf_masonry_loop_prepare’,’avia_change_default_link’, 10, 2);
function avia_change_default_link($loop, $entries)
{
foreach($entries->posts as $key => $entry)
{
if($entry->post_type == “post”)
{
$more = “<br /><span class=’masonry-more-link-arrow’>”.__(‘Read more’,’avia_framework’).”</span>”;
$loop[‘content’] = avia_backend_truncate($entry->post_content, apply_filters( ‘avf_masonry_excerpt_length’ , 60) , apply_filters( ‘avf_masonry_excerpt_delimiter’ , ” “), “…”, true, ”) . $more;
}
}

return $loop;
}

But as you can see all the descriptions are the same, How can I fix this?

regards