GUI in front of 4.6 UI

Hi guys i need an help to an issue that make me crazy. So i have a canvas in render mode "Screen Space - Camera" with all component to render sprite...then i have also a healthbar system with old GUI concept that works very well, the only problem is that is render on top of new UI. I try many time with depht but doesn't work.

I tried also with UI and slider and it's work but with Render Mode "Screen Space - Camera" but my only doubt is , the slider that i made with new UI is visible only for me and i want build a multiplayer game with this is not the best solution.

With "Screen Space - Overlay" doesn't work for me, the slider stay up to the other sprite.

The camera has attached a script for RTS camera (move the mouse on border of the screen move the camera up,down,left,right)

I hope that what i wrote is easy to understand , and sorry for my language but i'm italian.

I hope in a good person that make me to right way with this issue.

Thanks to all.

Cheers