Open the screen where the payment will be made in the UI Design module.
Add a button or other trigger element to initiate payment.
Select the button and add the Payment> Param > Param Payment Open Modal action from the + ADD ACTION menu according to the desired trigger event (Initial Actions, OnClick, OnBlur, etc.).
Fill in the following fields in the settings that opens:
PhoneNumber: Data obtained from the user, such as “form.phoneNumber”
OrderID: Unique order code (usually UUID) such as “order12345”
Installments: Number of installments such as “1” or ‘3’
TotalAmount: Total amount to be paid such as “599.90”