diff --git a/app/Nova/Actions/MakePaymentNovaVisaMaster.php b/app/Nova/Actions/MakePaymentNovaVisaMaster.php
index 3c691bc..0a06387 100644
--- a/app/Nova/Actions/MakePaymentNovaVisaMaster.php
+++ b/app/Nova/Actions/MakePaymentNovaVisaMaster.php
@@ -138,9 +138,8 @@ class MakePaymentNovaVisaMaster extends Action
 
             Text::make(__('USD ekwalendi'), 'usd_rate')
                 ->fullWidth()
-                ->readonly()
                 ->dependsOn('payment_amount', function ($field, $request, $formData) use ($usd_to_tmt) {
-                    if (property_exists($formData, 'payment_amount')) {
+                    if ($formData->payment_amount) {
                         $field->setValue(number_format($formData->payment_amount / $usd_to_tmt, 2, '.', ''));
                     } else {
                         $field->setValue('');