Of course,
I have a list of courses (over 400), and each of them I will added a form with two hidden fields (course name and price) and a button "send". By pressing this button, I am sending through $ _POST each course name and price to a second form, where I get these fields that I passed by $_POST and the user fill the other fields with his personal details and choose the method of payment (Paypal or offline).
I have done all this creating an external form to Joomla, and works properly, but I want to make this second form using the Joomla Extension Payment Form, but I do not know how to send these two fields of the form with $ _POST in Joomla to the second form
Thank you very much