Trellis chart problem

[LRocek21]

Hello all,

I have a problem with Trellis chart. I have the SAME values for each Dimension value, so I want to use Advanced mode and Set analysis $(vDimSetFull) to Measure, but it does not run. Dimension, Vizualization and measures are created as Master items. I think, the problem is that variable is still NULL. 

My no-function master metric:

Sum({$<[Year] = {"$(=MAX(Year))"},YearMonth,YearMonthTXT,$(vDimSetFull)}>}[Sales])

Somebody who knows, what is the problem?

Thanks in advice 😉