方形销售点的美元金额读数不正确

我试图使用文档中的示例代码测试Web API。我可以成功调用该应用程序并生成任何错误,但我硬编码到脚本中的金额传递不正确。好像差了两位数。

一、 E$500换算为5美元

我尝试过使用文本字段的值以及在值中硬编码。每次结果相同。

当我单击web表单上的按钮时,我调用代码:

 <!--- Square CC Processing --->
   <script>  
          document.getElementById("do_square_payment_btn").onclick = function (e) {

            e.preventDefault();

            var amount = $('#payment_amount_mobile').val();
            //var amountFixed = amount.toFixed(2);
            console.log("Amount being passed in on square button click " + amount);
            var dataParameter = {
                "amount_money": {
                    "amount" : '5000' ,
                    "currency_code" : "USD"
                },
                "callback_url" : "https://jaydien.ezservicetrax.com", // Replace this value with your application's callback URL
                "client_id" : "sq0idp-CHLAPYt9s1L594ZZZysDSQ", // Replace this value with your application's ID
                "version": "1.3",
                "notes": "Computer Service",
                "options" : {
                "supported_tender_types" : ["CREDIT_CARD"] //,"CASH","OTHER","SQUARE_GIFT_CARD","CARD_ON_FILE"
                }
            };

            console.log(amount);
            console.log("Square button clicked");
            console.log("square-commerce-v1://payment/create?data=" + encodeURIComponent(JSON.stringify(dataParameter)));
            location.href = "square-commerce-v1://payment/create?data=" + encodeURIComponent(JSON.stringify(dataParameter));

            };  


          //window.location = "square-commerce-v1://payment/create?data=" + encodeURIComponent(JSON.stringify(dataParameter));

    </script>

我做错了什么?