Howdy! When Implementing UsageCharge, can a UsageCharge be implemented as a % of a formula that uses Shopify API endpoints? In an example case, the variables of the formula are (A) Order Total and (...

Howdy all! How can one from the Shopify API derive the taxes charged for each individual product in an order? An example of the order would be for a (A) sweater and (B) wallet, and we're trying to s...