Set Analysis > 0 in KPI

[eaphymaoweave]

I'm trying to get a KPI to show a the last year/week where I have positive inventory. The underlying data set looks like the below. I'm trying to get a max yearweek with the set inventory greater than 0. Is this possible, what syntax would I use? Really appreciate any help.

YearWeek	Inventory
201801	1
201802	2
201803	3
201804	0

[eaphymaoweave]

Thank you all! That's really helping me understand the syntax I need to use to use set analysis.