Unity 5 Navigation Bar problem

I have Android's game but Nav Bar is force hide in the screen.

I need to slip the screen then Nav Bar will show in the screen.

In Unity 4, Nav Bar is auto show in the screen.There isn't have this problem.

How can I force show Nav Bar ?

 

Thanks you!

I hav another question.

I add it in script then Nav bar change from immersive to default

How can I change it to dimmed.

Picture look the same in

http://zehfernando.com/2015/unity-t...-status-bars-and-implementing-immersive-mode/