Need help with add controller roll input node

Helo all.
i am new to the game scripting and decide to start learning some basic function on blueprints.

i try to understand how controller input working inside ue4. The problem i encounter while trying to set input for a simple character blueprints with basic cube shape. Yaw input working properly but i cant get the pitch and roll controller to work. have been try for few hours and finally decide to post a questions here.

hope someone can help me with this
p/s: i already read the documentation on this note but the explanation is too little (or maybe i am too new to understand)

Thank you