I have an Azure SQL Database. I am using Dynamic Data Masking on the column "CreditCard". I have 2 users, User1 and User2. Neither of these users are administrators. At the moment, User1 can see the value in CreditCard because he was given permission to his user. User2 cannot see the value in CreditCard, and only sees XXXX-XXXX-XXXX- and the last 4 digits. I want User1 to not be able to see the values, and for User2 to see the values. What T-SQL code do I write?