Custom UI APP - useContentProperty

Hi there

Im building a Custom UI App in Confluence Cloud, which uses the Forge Custom UI Resolver etc. All is working well. However, I can not get working the UI Hook useContentProperty(‘my-property’,‘default value’);

How do I get the the useContentProperty to work with a Custom UI Resolver etc? If this is not an option, then how do I save/load custom page content properties. Im wanting to store custom data?

Thanks