Trying to use datamanager to move thread

[Altari]

Hello,

(Sorry for my bad english) :
I'm trying to move a thread and use the vbulletin datamanager. But when i run my script, nothing happen : my thread is not moved and i don't have any errors
Here is my code :

PHP Code:

                $threadinfo = array();
                $threadinfo['forumid'] = $req_fetch['forumid'];
                $threadinfo['visible'] = TRUE;
                $threadinfo['isdeleted'] = FALSE;
                $threadinfo['open'] = TRUE;
                $threadinfo['title'] = $req_fetch['title'];
                
                
                $threadman =& datamanager_init('Thread', $vbulletin, ERRTYPE_ARRAY, 'threadpost');
                $threadman->set_info('skip_moderator_log', true);
                $threadman->set_existing($threadinfo);
                $threadman->set('title', $threadinfo['title'], true, false);
                $threadman->set('forumid', $forumid_dest);
                $threadman->save();
                log_moderator_action($threadinfo, 'thread_moved_to_x', $forumid_dest); 


$req_fetch['title'] = title in thread table
$req_fetch['forumid'] is an integer (141, 142, 179 or 110 depend of the user)

What's wrong ?

Thank you