Getting Operating Point Data in PEX (extracted)

Hi,
My virtuoso and spectre version: ICADVM20.1-64b.NYISR30.2
When I want to check a voltage inside the hierarchy, I usually use a deepprobe. For example, in a schematic view, I type "I0.ICH_I.I_OPAMP_RC.I11.vip" in a Hierarchical Node of the instance deepprobe from analogLib and it brings me the node vip to the top level. Now if I want to do the same in an extracted view, if I use a DSPF file, I type: "I0.XICH_I\/XI_OPAMP_RC\/XI11\/vip" and it again shows me the net voltage. I added an "X" in front of the cell name and used "\/" instead of ".". I got this syntax from my colleagues and it works.
If I want to see the DC operating point of a device, say region or Vth, I use the following expression in the Assembler: OP("/I0/ICH_I/I_OPAMP_RC/I11/Mip" "region"). Now here comes my problem: I don't know how to modify the expression so I can do the same in the PEX (extracted view). I modified the expression by adding X etc. and tried different variations and it didn't work. I tried to locate the device in the DSPF file and saw the name MMip (instead of Mip). I tried that and it didn't work.
If you are familiar, can you please help me with how can I do it? I'm particularly interested to see the device "Vth" after extraction and check if it changes compared to the schematic. I'm not sure how can I properly (syntax) refer to the device in the hierarchy. Thank you.