How to properly fill scope variable?!?!

[cignum]

Hello,
I am trying reproduce this sample with an ApiApp I developed.

I cannot face how to properly set the variables below:

//API url
var apiURL = 'https://fabrikamb2chello.azurewebsites.net/hello';
var scope = 'openid https://fabrikamb2c.onmicrosoft.com/demoapi/demo.read';

I guess apiURL is the url is the actual address of where the aPI is published, and that's pretty clear.

I totally cannot understand how to set the "scope" variable above: my guess is that "https://fabrikamb2c.onmicrosoft.com/demoapi/" is the appID URI of the ApiAPP, but this is not explained in the article, and also I don't understand where demo.read comes from, and the role of the leading openid word.

Please help.

Thanks :)

[cignum]

Ok I figured it out by following this post:
https://azure.microsoft.com/en-us/blog/azure-ad-b2c-access-tokens-now-in-public-preview/

The explanation:
var scope = 'openid https://fabrikamb2c.onmicrosoft.com/demoapi/demo.read';
is a space-separated string of scopes.
"openid" is needed, as far as I understood, to get the ID_Token
the second part is the concatenation of the AppID URI of the ApiAPP and the scope VALUE, in this case a scope is created with value "demo.read" in the apiapp application configuration.