How to I have a boolean parameter on an action that can be set with an expression?

Hey,

I notice when defining aces that you can specify a parameter type to be a boolean. This is what I want, but in the editor, I want to be able to enter an expression when calling the action.

ActionDoThing( Someotherthing.IsFlagSet ).

Is there a way to to protect the parameter and force it to be a bool on the editor side without giving up flexibility and forces a checkbox?