Hi, I need to call a ZSQL method from a product and after searching the archives it seems the best solution is to make use of mapply as directed in cduncans article which deals with this in zopeLabs: http://www.zopelabs.com/cookbook/1010674274 Unfortunately, due to my lack of experience with Python, I cannot get the syntax to work and would appreciate some advise. Here's what I'm trying to do. Please don't laugh :-( def __init__(self, sql_method_name): self.id=id self.data_source_id =sql_method_name def check_db(self, val1, val2, val3): """Check database to determine if item already exists""" object = getattr(self.aq_parent, self.data_source_id) res = mapply(object, (arg1=val1,arg2=val2, arg3=val3), REQUEST, call_object,1, missing_name, dont_publish_class, REQUEST, bind=1) return len(res.dictionaries()) The ZSQL method I'm trying to call (sql_method_name) accepts 3 optional arguments, represented here by arg1, arg2, arg3 and returns true or false depending on whether an item with the values supplied can be found within the DB. I'm sure it's pretty obvious where I'm going wrong. Thanks geoff -- http://www.imagebites.net The most convenient news site on the net!