I have an external app to get the product variant that customer needs to buy/add to cart. I embedded this app to the Shopify product screen via iframe inside product.liquid.
Now I want to hide the variant selection on the product screen, let the customer to get the result variantId from my app and include the result variantId with the product if they buy/add to cart.
For example:
The result variantId from my app is ‘12345’ for ‘Product A’ => Click Add to Cart => Product A in cart has variantId ‘12345’
How can I do this?