https://tilda.cc/en/answers/a/store-parameters-en/
How do I add product options? - Frequently asked questions Tilda
1. Add a product card block to the page.2. Specify the options in the block's Content. In the Variants tab of the block's Content, click on the Add option.3....
how do iadd product optionsfrequently asked questionstilda
https://developer.fastspring.com/docs/add-product-options
Add product options
Learn how to add product options to a product, bundle, or subscription.
add product options