# announcements


07/27/2023, 10:43 PM
I am getting a bit confused as to how to set up an experiment where we can have users transition from anonymous to identified - we are using GA data to power GrowthBook. Since we leverage our backend for many of our experiments we set up Growthbook to use userId as the identifier for a user as userPseudoId we cannot access from backend. Our metrics do not look right as the downstream actions which are related to our metrics are not getting tied to the anonymous users who are flagged as experiment users. Anyone have thoughts on this?


07/27/2023, 11:16 PM
if you’re assigning on the server side for anon users, you need some id to identify them
this can be passed to GA client side as a customer identifier or as an extra property on the tracking callback call. As long as that id can be joined to your metrics it should work fine