[SOLVED]Google+ not working for me

Hi,
once added code inside template and with plugin enabled, the url of the author has the url of the site appended. (pls excuse my english). Instead of being:
plus.google.com/andsoon
is:
www.mysite.org/https://plus.google.com/andsoon

What do I do?
in the file templates>mytemplate>html>content>article>default.php I added
<a href="{GOOGLE_PLUS_AUTHOR:<?php echo $this->item->created_by?>}">
tra
<?php if ($params->get('show_author') && !empty($this->item->author)) : ?><dd class="createdby">
<a href="{GOOGLE_PLUS_AUTHOR:<?php echo $this->item->created_by?>}">
<?php $author = $this->item->created_by_alias ? $this->item->created_by_alias : $this->item->author; ?>

J4Schema is upgraded to latest version and the plugin is enabled. Where am I wrong??

Thx,
Mario

I just added the google id, in the example "108137335473606046188", in the field "Google+ author ID"
Is this correct?

I read the doc, as I read it before. Then, though there was never done wrong, I tried to uninstall and reinstall the component and the plugin. Now everything seem to work (I use "seem" because I just put only 1 author)