I integrated PayPal Express Checkout in an auction website and to calculate the total amount of a product I have different custom parameters like auction_fee. I mapped auction_fee on PAYMENTREQUEST_0_TAXAMT in my setExpressCheckout method like below
if (isset($ec_data['tax_amount'])) {
$tax_amount = (float)$ec_data['tax_amount'];
$nvpstr.= "&PAYMENTREQUEST_0_TAXAMT=" . urlencode(sprintf('%.2f', $tax_amount));
}
This gives me view like this in PayPal
But our end users mistakenly consider Tax an extra charge and we want to rename it to Auction Fee. Like this below I have gone through these links but no joys
Please suggest some solution for this.
Thanks in advance.