I need some help with Camera Triggers

I need some help with Camera Triggers

I'm making a solo play campaign, I just started it . And I want to make a camera that follow the unit.
I did it, but the camera doesnt look where the unit is looking at. I tried something I dont remember and it shows me a black screen.
How I can make the camera looks to where the unit is looking at?
From now thx u a lot .
-Argante.

1: Create a camera with the view you want
2: Actions:
Camera -> Lock camera to the <triggering> unit
Its simple

Ya, I know what u saying, I did it, but I cant make the camera looks to where the unit is looking at, if the unit is looking a tree, the camera doesnt look to the tree. If the unit looks backwards, the camera doesnt move, it still looks the same normal Wc3 camera.
Thx for ur help anyways .
-Argante