Paypal Button Item Quantity problem

programming flash
1

i want to make this button code have an order of ten of my items at once (bulk order)
the "add script has the numer of items, but when i enter say, 10, paypal only adds 1 item still…
any suggestions on how to change the number of items to more than one added to the cart at once?

on (release) {
var formData = new LoadVars();
formData[“add”] = “1”;
formData.cmd = “_cart”;
formData.business = "email@email.com";
formData.item_name = “Product Name”;
formData.amount = “13.00”;
formData.page_style = “Paypal Page Style”;
formData.shipping = “5.00”;
formData[“return”] = “http://www.website.com”;
formData.currency_code = “USD”;
formData.lc = “US”
formData.bn = “PP-ShopCartBF”
formData.shopping_url = “http://www.website.com/shopping.html”;
formData.send(“https://www.paypal.com/cgi-bin/webscr”, “_self”, “GET”);
}