To test your simulation, use this basic script to read the peak-to-peak values and convert them to RMS voltage.
Extract the downloaded zip file. You will likely see files ending in .LIB and .IDX . Copy both of these files. Paste them directly into the LIBRARY folder you located in Step 2. zmpt101b proteus library
It wasn't perfect. At voltages below 50V, the output was noisy. Above 250V, it clipped asymmetrically. She tweaked the SATURATION_COEFF variable in the code. Recompiled. Reloaded. Ran again. This time, the wave was clean from 10V to 300V. She had done it. To test your simulation, use this basic script