How to add a new custom flyCam

I want to custom control of cam. I have override the FlyByCam and rename it as Flybycam_Customed.

In simpleInitApp()
Flybycam_Customed fly= new Flybycam_Customed(cam);

I code like this and want to disable old flyCam firstly . Then to apply new custom Flybycam . But it didn’t work. It seems that no input was accepted. Anyone knows how to do this kind of replacement?

What about



To disable the existing fly cam just remove its app state… or never even add it (if you specifically pass the app states you want on the super() constructor).