Missing Parameters type in blueprint

Hi guys, im doing an interface and i want to add a parameter of the type EAnimationMode , but it doesnt appear in the list, but if in in a blueprint i drag it to a function input, is added.
Sorry for my poor english.

Is it because you are trying to use an enumerator value, rather than the enum itself?

If I make MyEnum, which has various values. I have to make the variable type MyEnum, not one of the values.