Image transform binding for Pages

Hi, On the Pages settings, there is an option to add bindings and Images (transform) shows up but doesn't save. Actually images are not listed as a binding in the Pages documentation: https://developers.cloudflare.com/pages/functions/bindings/ So I wonder where is the error and if it's only accessible to standalone workers. Ideally I'd like to use it with Pages. Thanks

Cloudflare Docs

Bindings · Cloudflare Pages docs

A binding enables your Pages Functions to interact with resources on the Cloudflare developer platform. Use bindings to integrate your Pages Functions with Cloudflare resources like KV, Durable Objects, R2, and D1. You can set bindings for both production and preview environments.