Hot Tank monitoring, with energy calculations

[rlkoshak (Rich Koshak)]

@mkhaled

Update: that worked, but I think it was grabbing the last item from the list. That will work for me for now. Again, thanks Rich for the wonderful explanation!

Remember that the order of the members of the Group are mostly undefined. If you want them in a certain order you’ll have to sort them. There are examples (I think) at Design Pattern: Working with Groups in Rules