Rotate a Plane to face camera

I try this code. but does not face camera.
How can I get it to work properly?

Hi @gtk2k, is there a reason why you are using the Primitive API? Primitives are low-level and harder to work with. The Entity API might be a better fit for what you are trying to do.

See this thread for an example of how to construct a plane-shaped Entity.

thank you for your reply.

The reason for using a Primitive is so that the Scale can be edited separately in X, Y and Z. This is because although Entity has Scale, it is impossible or difficult to set X, Y, Z separately.
There is also readyEvent in Primitive (Model), but there is no equivalent in Entity.