This feels really silly but I can't get the LEFT, MID, RIGHT, functions to work with variables at all. It just keeps giving me an error no matter what I try. It works with a string in the function but not if I use a variable. Can someone tell me what...

Hi there, thanks for taking the time to read my question! New to Airtable and it's formulas - what I'm trying to do is create a simple Hours of Operation setup where a user can select the days of the week a business is open (stored in Open Days), add...