Very Basic: POST form data through basic Submit button

Store Design
1

Hello there! Newbie here with a very basic question on forms, Polaris and HTML.

Whenever I add a basic polaris-based HTML form, The Submit button will post an empty message to the backend.

I am trying to get , in the post, the content of the filled fields but

Example, based on Shopify demo:

(https://polaris.shopify.com/components/forms/form#navigation)

Hookin App Main Page

App URL
Submit
Submit
App URL
Submit
Submit
2

btw, additional context. I’ve managed to, by changing the button location across the different sub-elements within the form section, receive one (and only one) of the field values on the post response.

My original page/form has more fields than this example and yet, I could not make this example work

thanks in advance,