[netwind]

This is reduced version. there must be "..and not parentid = 0".

a worked example from admincp/forum.php :

PHP Code:

        $forumdata =& datamanager_init('Forum', $vbulletin, ERRTYPE_CP);
        $forumdata->set_condition("FIND_IN_SET(" . $vbulletin->GPC['forumid'] . ", parentlist)");
        $forumdata->delete();

        define('CP_REDIRECT', 'forum.php');
        print_stop_message('deleted_forum_successfully'); 


this really works and i wrote my code similar

if i make instance of class :
$postdm=& datamanager_init('Post_Multiple', $vbulletin, ERRTYPE_ARRAY, 'threadpost');
i give
Call to undefined function: delete()