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#announcements
Title
# announcements
d

damp-branch-45047

04/17/2023, 1:58 PM
Hi Team, suppose i have two different features running in production. And user will push into 2 experiments with two tracking callback function calls. Is there any function which give me unique experiment id or anything where i can get all the features and variations that the user falls in.
f

fresh-football-47124

04/17/2023, 2:00 PM
We unique experiment exposure events
on the experiment reports
d

damp-branch-45047

04/17/2023, 2:01 PM
sorry, i didn't get your point.
can we get like that?
f

fresh-football-47124

04/17/2023, 2:02 PM
are you wanting to see the total counts of unique exposures?
oh
I see
in the trackingCallback is where you know exactly what experiments and variations the user was exposed to
d

damp-branch-45047

04/17/2023, 2:03 PM
yes
i get to know from that
f

fresh-football-47124

04/17/2023, 2:03 PM
you can recreate this as we use deterministic hashing, so you can re-run the method to see which variation the user did or may be exposed to
d

damp-branch-45047

04/17/2023, 2:04 PM
trackingcallback will get call only if the user included in experiment right?
f

fresh-football-47124

04/17/2023, 2:04 PM
yes
d

damp-branch-45047

04/17/2023, 2:05 PM
if he is not included in experiment, it will not get call
f

fresh-football-47124

04/17/2023, 2:05 PM
correct
d

damp-branch-45047

04/17/2023, 2:05 PM
so by just creating the growthbook object, tracking callback will not get call. right?
is there any function that get call for every growthbook instance creation at global level
f

fresh-football-47124

04/17/2023, 2:08 PM
we have an event on feature on - but not one for a high level global level
d

damp-branch-45047

04/17/2023, 2:11 PM
trackingcallback will get call only when ->we use useFeatureValue(in react) and user involved into experiment. Am i right?
f

fresh-football-47124

04/17/2023, 2:30 PM
yes
correct
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