customise checkout form

booking.stripe.js

@@ -26,11 +26,12 @@ jQuery(document).ready(function($) {
     $('.form-submit').click(function (e) {
         var $settings = Drupal.settings.booking_stripe;
         var $stripeForm = $("#" + $settings.form_selector);
-        var $amount = $(':input[name="gross_amount"]', $stripeForm).val() * 100;
-        
+        var $amount = $(':input[name="amount"]', $stripeForm).val() * 100;
+
         handler.open({
             name: $settings.name,
-            currency: "aud",            
+            panelLabel: "Pay {{amount}} (plus fees)",
+            currency: "AUD",            
             description: $(':input[name="description"]', $stripeForm).val(),        
             email: $(':input[name="email"]', $stripeForm).val(),   
             amount: Math.round($amount),