Hi everyone! I wonder if we should follow the GA4

experiment_viewed

event structure as it’s given in docs sample when firing it in tracking callback. Can we use our own

event_category

(e.g ‘AB Tests’ instead of ‘experiment’) or call it

experiment_impression

instead and follow the format we had while using Google Optimize? What we’ve found in docs:

window.gtag("event", "experiment_viewed", {
  event_category: "experiment",
  experiment_id: experiment.key,
  variation_id: result.variationId,
  ...
})

What we’d like to send:

gtag('event', 'experiment_impression', {
  event_category: 'AB Tests',
  experiment_id: expId,
  variant_id: `${expId}.${variantId}`,
})

I believe you can but you would then have to modify the default experiment assignment query to match.

Thank you for the answer! Should I modify query if I only change the

event_category

value? @white-fireman-22476

I'm not positive. I don't see event_category in our default assignment query for GA4, so you might be ok there.

Thank you!