I have a ListBox with the field as a calculated expression: Year([Effective Date])
I want the box to allow the user to select by year, not the specific data. Anyway, my problem is that the check doesn't appear in the Windows Checkbox next to the selection. The box goes white, but no check appears. Similarly if I use the LED option, the box goes white, but not green! It works okay for all of my other ListBoxes, but this is the only one with a calculated value. Any suggestions to get the check to appear? (or the green).
