$cust_currency = get_customer_currency($_POST['customer_id']);
$bank_currency = get_bank_account_currency($_POST['bank_account']);
if ($cust_currency != $bank_currency) {
$cust_currency = get_customer_currency($_POST['customer_id']);
$bank_currency = get_bank_account_currency($_POST['bank_account']);
if ($cust_currency != $bank_currency) {