**BUG**
Concise problem statement:
Running a tran sim works with this spice directive:
`let Icoll = -I(VCC)`
`probe Icoll`
set as text type = spice
but running a DC Sweep sim says:
"Error(parse.c--checkvalid): icoll: no such vector."
Steps to reproduce bug:
1. Set this text:
`let Icoll = -I(VCC)`
`probe Icoll`
to be an active spice directive (text type = spice)
2. CTRL+R (with
`dc I1 0 20m 20u`
set as spice directive)
Results:
Simulation results shows:
"Error(parse.c--checkvalid): icoll: no such vector."
Expected results:
Sim should run showing i(VCC) as well as i(i(XVA1)) the same way it does when running a tran sim.
Url:
https://easyeda.com/editor#id=8ysKEWewO
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