I have tried what you said,but it doesn't work.
My IO and Core power pad in the reference library is:
IO power pad cell:PLVDDH
IO ground pad cell: PLVSSH
Core power pad cell: PLVDDC
Core ground pad cell: PLVSSC
and I want to:
connect Core power pad to global net VDD
connect Core ground pad to global net GND
connect IO power pad to global net VDDH
connect IO ground pad to global net VSSH
When "Create Rectangle Ring",in the "Net Name"form,I typed in "VDD,GND,VDDH,VSSH",but errors came up like below:
net "VDDH" and "VSSH" doesn't exist!
Should I add globla net VDDH VSSH when "Expand Netlist" in "global options"??
BTW:
I have tried to add globla net VDDH VSSH when "Expand Netlist" but failed.