Get the reflection phase of FSS in CST

I'm simulating the FSS using CST 2007. But i cant get the reflection phase.
I ve read the topics about this in the forum, there are 2 methods for this: using macro with plane wave and using waveguide port. Both are in transient analysis.
I wonder if the later can be used in CST 2007 or not.
Anyway I ve tried the first and they get errors when running the macro.
Some people tell me that they simulating the EGB in eigenmode solver.
Now i'm so confused
please help me.
Thanks in advance.

Hi everyone,
I ve read many topics in this forum about reflection phase in cst. But now i' m so confused, there are a lot of methods: planwave and macro, waveguide port (which is said to be faster and easier) I'm using CST2007. Ive tried the first method, the results are not good meanwhile the seconds does not work. I posted my model here.
please help me asap.
Thanks in advance.