VmModel-paymentmethod

view.html.php

// Получить параметры способа оплаты
$paymentmethodModel = VmModel::getModel('paymentmethod');
$paymentmethodData = $paymentmethodModel->getPayment($this->cart->virtuemart_paymentmethod_id) ; 

 if( isset ( $paymentmethodData->cost_percent_total ) ){
            $DATA->SUBTOTAL->PAYMENT_PARAM_DISCOUNT = $paymentmethodData->cost_percent_total ; 
        }else{
           $DATA->SUBTOTAL->PAYMENT_PARAM_DISCOUNT = false ;  
        }