Azure CDN request domain match to container storage

Question

I currently have multiple domains. Eg

game1.mydomain.net
game2.mydomain.net
game3.mydomain.net
....
1 common storage divided into separate containers containing the source of each game: game1, game2, game3,...

Example: Going to game1.mydomain.net will get content storage.azure/game1/index.html

Request with any domain will get the corresponding content container. I set up CDN request with header, rewrite url with container path, but it doesn't work. Has anyone done this before?

Here is my setup and error