ADS model import to CST for optimization

there is an option in CST by which an ADS model could be imported to CST, dose anyone know how to use that and which kind of ADS file it accepts?
thanks

Dou you want to import the model or the S-parameter results?

just model from ADS to CST,
I wanna use the model to be optimized in CST but do not know how to do.

What kind of ADS model?

this is exactly what I asked in my first post ! which kind of models dose it accept?
I have tried every thing but no result.

According to the CST MWS data sheet, you can import ADS layouts (2D).
CST DESIGN ENVIRONMENT