Hey, thanks! That was it. Except I made the plane Point At at the Target Helper Object, and I child the THO to the camera. I want to make a lot of 2d plane trees, but I have problems to constrain it to turn on only the Z axis. In the modifier Point At parameters, you can choose xyz + and -, and I believe these choices is for constraining it to one axis. Either wich choice I make, and when I move the THO up and down, it still turn on the other axis? I know I can lower the THO underneath the camera, but its nice to know if this function is there.