Apologies!! I am coming into this thread several years too late. I am literally trying to accomplish the exact same thing but I can't get my python code right...I see your original attachment is no longer...I've followed the steps in the scrn shot of the calcutalor but I am so new to python...i'm probably missing an exclamation mark or something ridiculous....here's hoping you can help me as well. I've been googling python snippets all day and can't seem to find what works.
thanks as always
Lana