使用SetExpressCheckout从我的购物车重定向到Paypal后，我无法在左侧看到我的产品详情。我有以下代码：
METHOD=SetExpressCheckout&
VERSION=54.0&
PWD=xxxxxxx&
USER=xxxxxxx&
SIGNATURE=xxxxxx&
RETURNURL=xxxxxx&
CANCELURL=xxxxxxx&
PAYMENTACTION=Sale&
AMT=20&
SOLUTIONTYPE=Sole&
LANDINGPAGE=Billing&
L_PAYMENTREQUEST_0_NAME0=Product+1a&
L_PAYMENTREQUEST_0_NUMBER0=1&
L_PAYMENTREQUEST_0_AMT0=20.00&
L_PAYMENTREQUEST_0_QTY0=2&
L_PAYMENTREQUEST_0_DESC0=descriere&
ALLOWNOTE=1