Post processing the saved signals from a textual netlist

I have a schematic test bench which includes an instance called MUX16TO8B2T bound to a textual net list extracted from the layout. I can save the internal nodes inside the textual netlist file and then use the result browser to see and plot all the saved signals.

The textual file looks like this:

simulator lang=spice
*|DSPF 1.3
...
R66_707081 gnd:289508 gnd:F34543 6.07
XXM16TO8/XI6/MN4 XM16TO8/net23:F30363 SSCKb:F30364 gnd:F30365 nwbias:F30362 lvtnfet l=3e-08 ngcon=1 p_la=0 ptwell=0 w=1e-06 m=1 nf=1 par=1 ad=4.8e-14 as=7.6e-14 pd=1.096e-06 ps=2.152e-06
...

The save statements look like these:

save MUX16TO8B2T.gnd\:F34543
save MUX16TO8B2T.gnd\:F30365

I can use these ocean commands to plot the signals without any problem although I do not know why I need 4 escape backslashes:

open("psf")
selectResult('tran)
plot(getData("MUX16TO8B2T.gnd\\\\:F30365" ))

I am trying to get the ymax value of all the saved signals like this

ymax(v("MUX16TO8B2T.gnd\\\\:F30365"))

but I got these errors:

ocean> plot(getData("MUX16TO8B2T.gnd\\\\:F30365" ))
t

ocean> ymax(v("MUX16TO8B2T.gnd\\\\:F30365"))
WARNING (OCN-6054): The output 'MUX16TO8B2T.gnd\\:F30365' you selected does not exist. Type outputs() to see the list
of available outputs or type help('v) for more information on the 'v' command.
*Error* _ymaxMethod: can't handle _ymaxMethod(nil)

ocean> v("MUX16TO8B2T.gnd\\:F30365")
WARNING (OCN-6054): The output 'MUX16TO8B2T.gnd\:F30365' you selected does not exist. Type outputs() to see the list
of available outputs or type help('v) for more information on the 'v' command.
nil

ocean> getData("MUX16TO8B2T.gnd\\\\:F30365" )
nil

ocean> plot(getData("MUX16TO8B2T.gnd\\\\:F30365" ))
t

Does anyone know what the SKILL/OCEAN functions are to retrieve these signal by name so that I can use ymax() and other data processing functions to do the post processing? I am using IC6.1.6-64B.500.12.

Thank you,

TJ