We have an already published shopify app using Shopify’s managed pricing, currently with fixed pricing tiers.
We want to update our pricing tiers along with some new features we are publishing for our applicaiton that bill the user based on a specific usage behaviour in our app (a percentage of order volume when creating invoices for customers via our tools).
I understand the mechanicsms of creating app usage records, using subscription ids etc. and our back end is ready to record relevent chargeable events and pass them to shopify via GraphQl.
What we cannot work out is how to configure the pricing tiers for our applicaiton. The Dashboard for creating pricing tiers only allows you to create monthly or yearly fixed billing rates.
This article from July 2024 says that usage bvased billing is coming to managed pricing, implying it wasnt available previously
This documentation:
Appears to be about how to create an instance of a usage based billing subscription, but it relies on a app subscription id that refers to an exisitng plan that is part of the configuration of the app.
Is there a TOML configuration we can add to specify the details of a usage based billing plan, or is this not at all possible via mamaged pricing and we need to switch to billing API to use this feature?