Can custom user data be modified via Realm Sync in React Native?

Hi,

I’m struggling to retrieve custom user data for my users. I’ve enabled custom user data in the Realm console, and I’ve checked to make sure the custom user data settings are mapping to the correct userId field in the custom user data documents.

The React Native SDK guide shows an example of modifying custom user data via the Mongo client. However, I am syncing custom user data and modifying it via the Realm database. Can custom user data not be modified via sync?

Thanks!