wp_list_authors &after=

I’m using the “wp_list_authors” tag in my blog and it’s not putting a after each name.

Is there a way to use the “&after=” parameter with the “wp_list_authors” tag? Or is there another way to force the to appear?

Here’s what my code looks like…

<div id="sidebar">
<ul>
<li><h2>Bloggers</h2>
<ul><?php wp_list_authors('show_fullname=1&optioncount=1'); ?></ul>
</li>
</div>