A2billing Paypal Api development

I have a task to edit the a2billing paypal api [login to view URL] As: 1) When a paypal transaction is done, it's logged under ./admin//Public/[login to view URL], but there's a field named owner, this field is not being populated, so, in this field I need to populate the paypal account owner, and also, add another field as paypal transaction ID. and always when storing the paypal payment information, do it with together with the paypal transaction id, to be shown in ./admin//Public/[login to view URL], or ./admin//Public/[login to view URL], or ./customer/[login to view URL] 2) Then, when the transaction processed, and credited in the system, and customer balance is updated accordingly, send back to paypal notification into the referred transaction, as delivered service, and update the transaction with the customer Card ID, and the refill transaction ID. to be shown in paypal as delivered, as we have delivered the transaction to the customer account. Developer will have access to a development environment to play with, and test at convenience, before deployment... when job is done, we would be glad to release, and work into another task, as we have huge tasks to do in our roadmap... Please, this project is for individual developers only, NO ROOM FOR AGENCY CONTRACTORS, Kindly start your bid saying that you're **an individual developer** and not agency contractor, to know that you have read until the end.