how to use cmdmprobe in stb analysis (cadence)

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Julian18

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cmdmprobe

hi, there.
i want to analysis the stability of this full differential OTA(shown below), can anyone here tell me how to add the cmdmprobe in analogLib into this circuit to do the stb analysis?
Thanks.
 

cmdmprobe usage

connet vop and von to in1 and in2, then connect out1 and out2 to the resistor terminals
 

cmdm probe

I still dont understand
 

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