I am new to QuantConnect so maybe I am doing something wrong. I am trying out the code for the SMA rolling windows from the documention. I would like to take two values from the rolling window and either add them or divide them or whatever, but when I do I get...."Trying to perform a summation, subtraction, multiplication or division between 'IndicatorDataPoint' and 'IndicatorDataPoint' objects throws a TypeError exception. To prevent the exception, ensure that both values share the same type."

Can you tell what is the problem is? Thanks