Custom gateway

[koivumagi]

Hi,

I have made my owen Bank Transfer gateway and callback system.

All is working. after paying it change invoices to Paid and adding new Transactions line.

 

Now problem is this:

What line i need add to callback file, that after payment its sending "Invoice Payment Confirmation"

I hope its not so hard to tell me this... Maybe only what file it use and commands..i make all other self.