public function updateSyncMeta($args) {
        $sync = (bool)(int)$args['sync'];
        if (!isset($_SESSION['usces_member']['ID']) || empty($_SESSION['usces_member']['ID'])) {
            return $this->getErrorResponse(self::NOT_LOGGED_IN);
        }

        $memberId = (int)$_SESSION['usces_member']['ID'];
        $memMeta = new MemberMeta($memberId);
        $memMeta->updateAllowAmazonToWelcartLogin($sync);

        return 'success';
    }