More Currency Code Updates, would like to do conversions and add currency icons at a later date also set default country so it doesnt have to be selected each time

add_payment_modal.php

@@ -10,6 +10,7 @@
       <form action="post.php" method="post" autocomplete="off">
         <input type="hidden" name="invoice_id" value="<?php echo $invoice_id; ?>">
         <input type="hidden" name="balance" value="<?php echo $balance; ?>">
+        <input type="hidden" name="currency_code" value="<?php echo $invoice_currency_code; ?>">
         <div class="modal-body bg-white">
           
           <div class="form-row">