As per the requirement wanted to know the last product purchase by the user. We are capturing the product in the event base class which has a product name attribute. But the evaluation failed is there any way to debug, also for evaluation need to wait for 24 hrs.
Definition
xEvent[_abc.rb_productName.isNotNull()].topN(timestamp, 1).map({"timestamp": timestamp, "value": _abc.rb_productName}).head()
