Unable to use Waveguide Port

I am unable to use Wave guide port in Antenna design. It shows a error as improper range, out of bound. Please help me with the above issue.

I hereby attached the link(google drive link) of the CST file of my antenna design. In that antenna design I have to assign two Wave guide ports. Wave guides are required at the following dimensions. Please help with the above mentioned issue.

Wave guide Port 1:
X-axis : 4.985 to 5.02
Y-axis : 0 to -0.6
Z-axis : 3

Wave guide Port 2:
X-axis : 4.985 to 5.02
Y-axis : 0 to -0.6
Z-axis : 2

Google drive link for my antenna design is

https://drive.google.com/file/d/0B9y...ew?usp=sharing