如何从CreateRecurringPaymentsProfile贝宝api获取交易id

我正在尝试使用贝宝创建定期付款。为此，我正在使用这个功能，

function CallShortcutExpressCheckout( $paymentAmount, $currencyCodeType, $paymentType, $returnURL, $cancelURL) 
{
    $nvpstr="&AMT=". $paymentAmount;
    $nvpstr = $nvpstr . "&PAYMENTACTION=" . $paymentType;
    $nvpstr = $nvpstr . "&BILLINGAGREEMENTDESCRIPTION=".urlencode($_SESSION['cart']['total_amount']['name']);
    $nvpstr = $nvpstr . "&BILLINGTYPE=RecurringPayments";
    $nvpstr = $nvpstr . "&RETURNURL=" . $returnURL;
    $nvpstr = $nvpstr . "&INVNUM=" . $_SESSION['cart']['inv'];
    $nvpstr = $nvpstr . "&CANCELURL=" . $cancelURL;
    $nvpstr = $nvpstr . "&CURRENCYCODE=" . $currencyCodeType;
    $_SESSION["currencyCodeType"] = $currencyCodeType;    
    $_SESSION["PaymentType"] = $paymentType;
    $resArray=hash_call("SetExpressCheckout", $nvpstr);
    $ack = strtoupper($resArray["ACK"]);
    if($ack=="SUCCESS" || $ack=="SUCCESSWITHWARNING")
    {
        $token = urldecode($resArray["TOKEN"]);
        $_SESSION['TOKEN']=$token;
    }
    return $resArray;
}

它返回令牌，然后我正在使用这个函数创建重复配置文件

function CreateRecurringPaymentsProfile()
{
    $token      = urlencode($_SESSION['TOKEN']);
    $email      = urlencode($_SESSION['email']);
    $shipToName     = urlencode($_SESSION['shipToName']);
    $shipToStreet       = urlencode($_SESSION['shipToStreet']);
    $shipToCity     = urlencode($_SESSION['shipToCity']);
    $shipToState        = urlencode($_SESSION['shipToState']);
    $shipToZip      = urlencode($_SESSION['shipToZip']);
    $shipToCountry  = urlencode($_SESSION['shipToCountry']);
    $nvpstr="&TOKEN=".$token;
    #$nvpstr.="&EMAIL=".$email;
    $nvpstr.="&SHIPTONAME=".$shipToName;
    $nvpstr.="&SHIPTOSTREET=".$shipToStreet;
    $nvpstr.="&SHIPTOCITY=".$shipToCity;
    $nvpstr.="&SHIPTOSTATE=".$shipToState;
    $nvpstr.= "&DESC=".$_SESSION['cart']['total_amount']['name'];
    $nvpstr.="&SHIPTOZIP=".$shipToZip;
    $nvpstr.="&SHIPTOCOUNTRY=".$shipToCountry;
    /*$nvpstr.="&PROFILESTARTDATE=".urlencode("2015-12-01T0:0:0");*/
    $nvpstr .= "&PROFILESTARTDATE=".date("Y-m-d", mktime(0, 0, 0, date("m", time()), date("d", time()), date("Y", time())))."T00:00:00Z";
    $nvpstr.="&BILLINGPERIOD=Year";
    $nvpstr.="&BILLINGFREQUENCY=1";
    $nvpstr.="&AMT=".$_SESSION['cart']['total_amount']['total'];
    $nvpstr.="&CURRENCYCODE=USD";
    $nvpstr.="&IPADDRESS=" . $_SERVER['REMOTE_ADDR'];
    $resArray=hash_call("CreateRecurringPaymentsProfile",$nvpstr);
    $ack = strtoupper($resArray["ACK"]);
    return $resArray;
}

但它将我返回到profile-id，而不是transaction-id。我在哪里读到我们必须使用DoExpressCheckoutPayment来完成付款。但随后金额从贝宝中扣除2次。

1( 做DoExpressCheckoutPayment之后2( 创建recurring profile 之后

我在经常性付款方面做错了什么？我只是想，首先我需要做expresscheckout，然后我需要创建重复配置文件，并将开始日期设置为明年。所以第一笔金额将由DoExpressCheckoutPayment扣除，然后从下一年起由recurring profile扣除。

有什么更好的方法可以使用快速结账进行定期付款吗？太混乱了，无法在贝宝中使用recurring payment。

请帮我解决这个问题。提前谢谢。