Firebase In-App Messaging with User Property on Android

Question

I’m experimenting with Firebase Events, User Properties and Audiences on Android.

I’m trying to set an user property, use it to target users and send an In-App Message.

FirebaseAnalytics.getInstance(this).setUserProperty("has_credit", "true")

But the In-App Message is never fetched when target with the user property.

I have already registered the user property on Firebase Console and wait 24 hours.

Is it or not mandatory implement Firebase Auth to use User Properties of Analytics? or Am I missing something else?

Thanks!!!