Hello, there.
I wonder if the Subscription API can do something like this:
1. User subscribed to a montly-paid plan, and the actual amount the user should pay remains unknown at this moment.
2. As the user use our service, the amount increases.
3. We put this value back to the subscription at some point, and when the next billing time comes, the user will be charged with the correct amount of price.
I have tried to update the outstanding balance of a subscription, but it says
"The new outstanding balance can not be greater than the current outstanding balance.", so this is apparently not the right way to do it.
Is it possible to achieve something like this via Subscription API?
Thank you.
