gistfile1.txt

/**
     * Update the order reference.
     * 
     * @param  mixed    $paymentId  [The current paymentId]
     * @param  miced    $to         [What it should be updated to]
     * @return [type]               [description]
     */
    public function updatePaymentReference($paymentId, $to) {
        if ( empty($paymentId) || empty($to) ) {
            throw new \Exception("Payment id and to must be set");
        }

        $url = $this->getOmniUrl() . '/checkout/payments/' . $paymentId . '/updatePaymentReference';
        $response = $this->createJsonEngine($url, json_encode(array('paymentReference' => $to)), ResursCurlMethods::METHOD_PUT);
        return $response;
    }