We would like to add a parameter to our InstantGame link http://m.me/PageTitle?game=GameTitle&PARAMETER=VALUE, which we want to read out again later e.g. for campaign tracking.
We found something here, but it doesn't seem to work on instant games. https://developers.facebook.com/docs/games/gamesonfacebook/hosting#queryparams
Can you give me a hint how to add a parameter to the URL, which I can read later again in the instant game iFrame?
The m.me link supports a ref
param that will be passed to your webhook in the messaging_optins
and messaging_referrals
event.
https://developers.facebook.com/docs/messenger-platform/discovery/m-me-links#parameters