Excluding choices from list

Must be a Monday…I feel like this is a simple answer but it’s not coming to me and I’m unlucky in my search results. Formula language preferred.

I have a checkbox called MyChoices where they could select any number of choices.

My next field is a radio button called ‘FirstChoice’ and I want it to contain all the values that were selected in MyChoices. So far so good. Now I want another field called ‘SecondChoice’ and it should have all the values in MyChoices MINUS what was selected in FirstChoice.

(OR is there anyway I could have them enter a number instead of an X in the initial checkbox?)

Subject: Excluding choices from list

@Trim(@Replace(…))

Try using real coffee instead of decaf! :wink:

Subject: RE: Excluding choices from list

Thx for the great advice…on the formula and the coffee!! : - )

Subject: Excluding choices from list

… to populate values in this third field, why not use code used to populate first radio button (so, using values from first field), minus selected value of first radio button?