List check can not be a calculated value. It is actually a physical list of values. Here is a partial copy of the Help File documentation on List Check
List Check
List checking validates the data in a column. Set up the column to accept only the individual values that you specify. List checking is useful when you want to specify how to order the data in your graphs or plots.
•You can use up to 127 values.
This is a great item that you add to the JMP Wish List
Jim