Matrix in PowerBi shows same values for each row

There is no filter flow from your Zimiany table to your SAX table so you will not get a proper filter contect if you use the "Nazwa grupy" from "Zmiany" and the measure built off of SAX. 

Without knowing your datamodel it is difficult to give you the best path forward.  With that said I would default to Roche’s maxim and say you probably should look at doing some upstream work. 

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