gform_post_payment_status Hook Not returning values

Hi,

We are attempting to use the gform_post_payment_status, however, in all our testing, none of the values are coming through, therefore we can't see the status of the transaction and act appropriately on it.

PayPal says it is sending parameters to us, and the hook is being hit as an email is being sent to me via it, but there are no values attached to the variables.

Is there a fix for this?

Cheers

In the database itself, the status says either pending, payment or refund, depending on which transaction it is. So the database is being updated fine, it's just when the hook runs, no values are being sent through to it.