Simulating an NMOS in Cadence.

I am trying to use the nmos4 instance which I found in analogLib but I get the following error: 'nmos4' is an undefined primitive device. I tried using the following library file which I created:

simulator lang=spectre
library nmos

section ss
model nmosajm nmos4 tnom=27 TOX=4.1E-9 XJ=1E-7
endsection ss

endlibrary nmos

I also tried using the following model file:

..model nmosajm nmos4 tnom=27 TOX=4.1E-9 XJ=1E-7

I realize I'm missing a ton of parameters but I figure I should get past the 'nmos4' is an undefined primitive device error before I move on.

Hope someone can help.

Thanks
Andy