print values for dc analysis

I'm currently using spectre for the dc analysis for a simple NMOS, represented as 

mn0 (d_n g_n 0 b_n) g45n1svt w=w_n l=l_n

vg_n_inst (g_n 0) vsource dc=vg_n

I would trying to save the mn0:vsat for individual vg_nvalue  to the log file or other files for the dc analysis:

dc_a dc param=vg_n start=0 stop=2 step=0.01 save=all print=yes  

I also added the following at the end of scs file:

outputInfo info what=output where=logfile
element info what=inst where=logfile

However, there is no vdsat printed in the log file or elsewhere. 

I tried to search over the Spectre® Simulator Fundamentals course & the spectre manual, but it seems like I cannot find the solution out there. 

I'm not sure what could be the possible solution. I would expect similar results as .print mn0:vdsat if written in SPICE. 

Thanks in advance.