Measuring a nodal voltage for some condition

Hi all,

I am new to cadence, and in between my Master thesis project.

i want to measure a nodal  voltage v1, when vout is 0.1v
actually I am trying to measure the Transition voltage,  in a adc
design.

could any one help me out.

i was going through the oceans script, but couldnt succeed.

Thanks.
dinac