function DoCaptTran($hostlogkey,
                        $authcode,
                        $amount,
                        $currency,
                        $instnumber,
                        $multpoint = "00",
                        $extpoint = "000000") {

        $posnetRequest = new PosnetRequest();

        $posnetRequest->hostlogkey = $hostlogkey;
        $posnetRequest->authcode = $authcode;
        $posnetRequest->amount = $amount;
        $posnetRequest->currency = $currency;
        $posnetRequest->instnumber = $instnumber;
        $posnetRequest->multiplepoint = $multpoint;
        $posnetRequest->extrapoint = $extpoint;

        return $this->DoTran($posnetRequest, "capt");
    }