Show avatar in PM, I wrote the plugin but there is error !

[sadiq6210]

Hi dears,
I want to write a plugin to show the user avatars in PM list (inbox/outbox....etc)

I added this plugin:

require_once('./includes/functions_user.php');
if (THIS_SCRIPT == 'private')
{
   $pm[avatarurl] = fetch_avatar_url($pm['fromuserid']);
     if (!$pm[avatarurl]) {
                    $pm[avatarurl] = $stylevar['imgdir_misc'] . 'images/misc/unknown.gif';
                  } else {
                    $pm[avatarurl] = $vbulletin->options['bburl'] . '/' . $pm[avatarurl][0];
                  }
}

Then I added this to template(pm_messagelistbit)

<img src="{vb:raw pm.avatarurl}" />

It is working and the avatar shows but only in first row !
I mean there is avatar only in FIRST pm (one avatar in each page).

Any help?