How to hide variables from categories?

I am extending the Controller right now and have recognized that there is no option to hide local variables from being editable in defaults mode. I’m talking about variables like bools that internally toggle but mustn’t be edited.
Since blueprints like the controller or game won’t be instantiated until the game starts, the designer only needs to see variables exposed that are relevant.

Is the only way to do this by defining a new category like “do not edit”, or is there a way to actually hide the local ones.