Paul,
There are a couple of things you need to do:
Hope that helps,
Mike
**EDIT**
Screenshot of a sample microflow
Hi Paul,
You can read this one : https://www.mendix.com/blog/create-first-mendix-appcloud-powered-app/
I think you need to add appcloudservices (https://appstore.home.mendix.com/link/app/934/) into your project and following this configuration
https://docs.mendix.com/developerportal/deploy/integrate-with-mendix-sso
Hope that help
Cheers