Not able to calculate Offsets in Maxsurf

I have done the design in rhino and exported it to Maxsurf. I created a design grid and calculated the offsets but still I cannot see the offsets. I am attaching my modle file. I hope you can verify it help me with my problem Thank you. 

https://drive.google.com/file/d/1eZ1xS3yq8QmVwBOh7rI8kP2wZ3KczgJg/view?usp=sharing

This is the drive link to access the file.