WP + ACF How to retrieve data in front end product page

Hi there,

As it said in the title I’m trying to retrieve the data from my ACF’s fields.

Better than an explanation, please see the following screenshot:

So as you can see I’ve created under my attribute ‘*pa_size*’ the 2 following text fields: **uk-size** and **us-size**.
Which is giving the following result in my Products->attributes backend:

Until there, everything’s ok but the next step is to retrieve these data to the following single-product **(variable)** screen:

I tried with this documentation from ACF to do it but impossible. I also tried to place different part of code under */public_html/wp-content/themes/atelier-child/woocommerce/single-product/add-to-cart/variable.php* but no way to figure it out. It’s been days I am struggling on it and it’s driving me super crazy.

I would like if I click on “UK” or “US” to display sizes like on this link.

If anyone could help even just a little bit, I would be really grateful!!

Thanks in advance guys.

[1]: https://i.stack.imgur.com/rJ5ja.jpg
[2]: https://i.stack.imgur.com/qqxci.jpg
[3]: https://i.stack.imgur.com/24f6T.jpg
[4]: https://www.advancedcustomfields.com/resources/code-examples/
[5]: https://www.sneakersnstuff.com/en/product/26308/nike-air-zoom-talaria-mid-fk-premium