How to launch a ml studio web app in azure request response ml web service?

Hi

I saw this video and it was pretty easy to launch

https://www.youtube.com/watch?v=c-BtoTdbjuQ 

but in the new versión of azure web app RRS, I get to create and run the service but I dont see where should I put my API key and URL, I searched in the documentation specific for setting the azure ml in a web app like the video but I did not find anything.

Any help to get my web app functioning like in the video would be very helpful.

Thanks you