[set analysis] Sort by highest quantity in most recent timestamp

[#1]

Dear all

I am quite familiarised with the Set Analysis, but yet there is something simple that I am not able to achieve.

Been giving it a try in these last two weeks, but I'am giving up!

Basically, my source is SKU, quantity, timestamp

What I want to visualise, in a pivot chart, is the trend of quantity available for each SKU over time.

And I would like the SKU to be sorted descending according to the SKU which has the highest quantity for the most recent timestamp

I tried with something like this (in Sort>Expression)

=sum({$<BO_KPI.TimeStamp={$(=max(BO_KPI.TimeStamp))}>}   BO_KPI.Qty)

which is a pretty straightforward set analysis, but apparently I still manage to do something wrong, as SKUs are sorted in a random way (or in a way with no apparent logic).

Can someone pls help me sort this out?

Thanks already!

[#2]

Thanks Vegar, it was in my Bookmarks Bar already, guess I need to refresh my memory with it!