pure inductance circuit simulation

Hello,

I have a question reagrdig my gnucap simulation of a pure inductance.

Here is my gnucap code:

Pure Inductance:

V 1 0 sin(0 220 50)
L 1 0 100m ic=0V

.print tran v(1) i(L)

.tran .001 .02 >AcXl.dat uic
.end


When I plot the simulated data with gnuplot I get
a Voltage leading current by 90 degrees, but the
current is only positive and don't change to negative
values. How can I simulate a pure inductance with gnucap?

regards
Josef Vukovic