ZOS-API: Get Tolerance Criterion at each iteration

# Modules
import os

# Open the tolerancing tool
MyTol = TheSystem.Tools.OpenTolerancing()

# Set criterion to MF value
MyTol.Criterion = ZOSAPI.Tools.Tolerancing.Criterions.MeritFunction

# Perform a single run iteratively
# Set the number of runs to 1
MyTol.NumberOfRuns = 1

# Set the desired number of runs
CustomNumberOfRuns = 1

# Save Tolerance Data (by default in the same folder as the lens file)
MyTol.SaveTolDataFile = True

# Compose the full path to the Tolerance Data file
TolDataPath = os.path.dirname(os.path.abspath(TheSystem.SystemFile))
TolDataPath += '\\' + MyTol.TolDataFile

for ii in range(0, CustomNumberOfRuns):
    # Run a single MC analysis
    MyTol.RunAndWaitForCompletion()
    
    # This is where I would read the ZTD file, but somehow I can't get the encoding right from OS
    
# Close the tolerancing tool
MyTol.Close()