angularfire SSR change region functions

I created an angular project with universal and angularfire, the ssr function is created in the us-central1 region, I would like it created in europe-west3.
I managed to change the region from the file @ angular/fire/schematics/deploy/functions-templates.js
But when I try to connect to the site it gives me a Forbidden error and the url remains instead of "".
How can I totally change the SSR region?

Angular 11.0.1
Angular universal 11.0.1
Angularfire 6.1.4

Source: Angular Questions