[rafaelcpalmeida]

The payment system we're trying to implement takes 3 values (2 from the configuration form and the total price from the order) and returns 3 values also (1 from the configurations, a reference which is calculated using the value and the final value).

All fields can be strings.

Here's an example of what the module should return:

Entity: 99999
Reference: 999 000 229
Value: 923€

I want this to be displayed in the last step which is, I think, the invoice.