Updating User Permissions

[M1th]

I've got a query which adds an access mask data to the table. Now, I can't seem to figure out how to update users permission based on that.

Code:

PHP Code:

$insert_mask_sql = array();    
        $insert_mask_sql[] = '(' . $UserData['userid'] . ", 72, 0)";
        
        $db->query("
            INSERT INTO " . TABLE_PREFIX . "access
                (userid, forumid, accessmask)
            VALUES
                " . implode(",\n\t", $insert_mask_sql)
        ); 


It ought to be something like this:

PHP Code:

    $userdm =& datamanager_init('User', $vbulletin, ERRTYPE_SILENT);
    $userdm->set_existing($UserData['userid']);
    $userdm->set_bitfield('options', 'hasaccessmask', (sizeof($insert_mask_sql) ? true : false));
    $userdm->save();
    unset($userdm); 


But I get errors with those...

Anyone got any ideas?

Cheers