Hi guys,

I try to make my own caclulation in the fine filter method of my Universe.

def FineFilter(self, fine):
...

	sortedByMarketCap = sorted(fine, key=lambda x: x.MarketCap)
	


	...
    updateelement = {mySymbol: myCalculationValue}
    AdS_dict.update(updateelement)


	...

and get this error:

AttributeError : 'list' object has no attribute 'update'
  at FineFilter
    AdS_dict.update(updateelement)

But the same code is working well in the reasearch environment.

What could be my mistake here?