Try this:
PHP Code:
$formforumid = "13";
$foruminfo = verify_id('forum', $formforumid, 0, 1);
$forumperms = fetch_permissions($foruminfo[forumid]);
$newpost['username'] =& $vbulletin->userinfo['username'];
$newpost['message'] =& $formsend;
$newpost['title'] =& $posttitle;
$newpost['parseurl'] = '1';
$newpost['poststarttime'] = $poststarttime;
$newpost['posthash'] = $posthash;
if ($vbulletin->userinfo['autosubscribe'] != -1)
{
$newpost['emailupdate'] = $vbulletin->userinfo['autosubscribe'];
}
else
{
$newpost['emailupdate'] = 9999;
}
if ($vbulletin->userinfo['signature'] != '')
{
$newpost['signature'] = '1';
}
else
{
$newpost['signature'] = '0';
}
build_new_post('thread', $foruminfo, array(), array('skip_floodcheck' => true), $newpost, $errors);
Again just a guess.