Hi everyone, I'm new to GrowthBook. I have read the documentation, but I still have a question about

trackingCallback

. Based on the docs, does this event get triggered only once when we create an instance?

it will get triggered when a user is placed into an experiment, because of an experiment rule (or inline experiment)

But what if I want to fire our event when I click a button? Is there any callback I can use?

what event is this? like tracking the button click?

Internal event for tracking data. That event will be trigger when I click the button

yes, so the way GrowthBook works is that all additional events on clicks or page views or whatever, will be joined by a user attribute (usually an id) to the experiment exposure event, on the experiment report

Oh I see. Thank you. Going to test it around. Is there any videos about it ?

there are a few that give an overview of how it works

Thanks! I will check these out👍

@fresh-football-47124 what if I want to send the tracking callback only when the user is actually seeing the experiment and not when it gets allocated? I would want to avoid a situation whereby a user gets allocated to an experiment, tracking is sent but during the journey or test duration he/she never actually get to experience the control/variation because for instance doesn't go on the page/app screen where the change is

you can use activation metrics for that use case