Calc to deselect one choice when any others are selected
In FM11, I have a field that is using checkboxes for choosing among 4 options from a value list, where the 4th option is "No".
I also have that field defined with an auto-calc to select "No" whenever a new record is created.
Later, the User can choose any (or all) of the remaining 1-3 values.
When they do, however, I would like the "No" selection to be automatically deselected.
How would I accomplish that?