Using a Lookup in Flow has been crazily difficult since Flow’s inception. Looking up a user? You might think you would use the UserId as a field, but no – you need “CreatedById” or another system field. But in Spring ’23 we finally have the capability to directing access Id fields using the ‘Fields’ component, that used to be in Beta prior to Winter ’23. Now, you create a record variable such as varAccountId for the Account ID lookup on an Opportunity, and then reference the Account Id directly. Much better!