How can I use a .s37p file in ADS

Hi,

I just designed a layout and extracted a 37-port s-parameter into a .s37p file with ADS. And I want to use it in ADS circuit simulation.
But I have trouble in importing it into circuit simulation.

Does anyone know how to import a .snp file (n>10) in ADS?

Thanks!

Just type in S37P

Many Thanks!