I am developing an app. It has a function to create a product with variants. When I go to the product detail page, there is a block which shows my app name. I want to add some data to the block. So, I instqalled Admin Block Extension and targetted the product detail page. The add block is shown at the end and I have to pin it in the admin product detail page. But, I want to be able to display it in the block shopify created for me. How?