cmdmprobe setting (CMDM=1: CM analysis; CMDM=-1, DM analysis)
transient: save the final steady-state operating point at the timepoint that you want to run the 'stb' analysis.
PS: analysis order should be manually set: tran stb (which tell spectre to run transient first, then do 'stb' analysis)
Anaysis Order setting: ADE-->Setup-->Environment-->Analysis Order: tran stb