anyone help? ngspice sensitivity analysis problem

[ishto]

i'm a newbie and used ngspice to do a sensitivity analysis
the circuit is right
but when i type the "sens v(?)" command
there are not any output
however other analysis is ok
how to display the output of "sens", please? thanx!

 

[ishto]

the output is like this:
ngspice 124 -> sens v(3)
Doing analysis at TEMP = 27.000000 and TNOM = 27.000000



No. of Data Rows : 1

ngspice 125 ->
thx 4 ur help!