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# announcements
w
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f
How long has the experiment been running for?
f
Hi Colin. It's most likely a config issue in GrowthBook where it isn't looking for the right events in Mixpanel. Can you share the
mixpanel.track
call you are doing and the data source settings page (where it says event names)?
t
@fresh-football-47124 about 2 hours but it's on our staging environment so i know we've definitely had events come through as we've been deliberately testing it. @future-teacher-7046 sure let me dig it out
Copy code
const growthbook = new GrowthBook({
  trackingCallback(experiment, result) {
    TrackExperimentViewed({
      experimentId: experiment.key,
      variationId: result.variationId
    });
  },
});
is our tracking setup
that 'TrackExperimentViewed' is just a wrapper for
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return track("Experiment Viewed", {
    experimentId,
    variationId
  });
that's my datasource settings
f
Ok, that looks correct. Can you go to the experiment results, click on the 3 dots next to the Update button, the Configure Analysis and change the start date to yesterday? Some other people have reported timezone issues with Mixpanel, so that may be causing it to miss data
t
ah yeah, that's it
Hmmn, makes me think my mixpanel config is off. I'll have to look into it. Thanks for the assist!
f
Let us know if you figure out what's happening there so we can update the docs
t
will do
it looks like out project timezone is set to US/Pacific for some reason, which makes me think all events come in and are tracked under that timezone rather than their UTC equiv.
f
👍
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