Jeremy Cowgar wrote at 2003-3-8 00:15 -0500:

I have just finished the ZooExhibit product tutorial. It checks the property of a ZClass, last_meal_time to see if the animal is hungry. If so, I want to feed it (practice). So, I created a python script with a link to it inside the <dtml-if isHungry> area, and in it I have:

manage_changeProperties(last_meal_time, '2002-01-01')

ZClass properties usually live in a property sheet. You must call the "manage_changeProperties" of the corresponding property sheet. I forgot how to access the property sheet. I think it was instance.propertysheets.sheetname Search the archives, to find out precisely.... Dieter