We wish to track our own custom parameters.
For example:
In the case of a user entering the website for the first time through this url “test.com/home?utm_source=foo&ad_id=bar”
Amplitude would capture utm_source, which is “foo”, as his initial_utm_source. But wouldn’t capture ad_id=bar at all.
How can we setup Amplitude in a way that ad_id gets captured as well as initial_ad_id gets set.