I am using the component to integrate Push notification and using the RegisterWithUser action.

The device gets registered, I can see on OneSignal User Audience, but the User Id I don't find anywhere. I was expecting to see it as External ID, but it is empty.

For testing purposes, I added the action after the login page, even tried adding on a button forcing it after the login to make sure the GetUserId() is valid. 

Where the User Id is stored? Is it sent to OneSignal? How to update user external ID?

Thank you.