Hello everyone,
I want to create a marketing list, grouped by a new entity we've created that is 1:N
This entity is called 'products', and it has:
a product value (a lookup field), a name, a volume, and the campaign it was bought.
I am trying to create a marketing list that contains all users (accounts) of the products for two or more campaigns (=years).
I tried this, but is not working:

Can you help me?
Thank you!!