How to use dbCreateInstTerm ?

Hello All,

I have a pcell without any connectivity defined. I would like to use
the dbCreateInstTerm function to defined some pins, to have
css()~>instTerms != nil.
My pcell is a resistor, i would like 2 pins: Plus and Minus.

Function dbCreateInstTerm use the following parameters:
dbCreateInstTerm(d_net d_inst d_term)

First i create:
d_net = dbCreateNet(pcCellview "PLUS")

and
d_term = dbCreateTerm(d_net "PLUS" "inputOutput")

But i don't know how to create/define the missing parameter, i mean
d_inst ??
I think i must use dbCreateInst, to get d_inst, but it seems that i
can use it only for existing cells. It's not my case.

I use rodCreateRect in my pcell, to draw shape of poly.

Or just to use dbCreatePin ?? I think it's not enough to perform what
i need.

Thanks a lot for your lights,

Regards,

b.