Hello there @eyalos,
I double-checked this with the team in charge of the quickstart guide.
They mentioned that you need to set an Environment Variable/Secret on your app (as shown here), which is currently only supported on monday code in the dev center.
Our team is working on a solution for local development but we do not have an ETA yet.
I am sorry for the previous message which was not accurate.
Let me know if you have any other questions!
Cheers,
Matias