Creating a class with enum

How do I set a Simulink inport/outport data type equal to an enum? If I try, it looks like I need to make an enum class.

After making an enum class, Simulink still doesn't offer my enum class as an option.

The code in my .m enum class file reads:

classdef DesiredBlockMovement < Simulink.IntEnumType

    enumeration
        Coast(0)
        Lower(1)
        Hoist(2)
    end
end