Power Pivot: Show last month data from slicer selection in grand total

[Lars Ole Sørensen]

Hi,

Is there a way to adjust the formulas so the grand total values is the values of the last month in the slicer selection?

If the slicer selection is januar to desember the values should be desember data that is:
Faste ansatte menn 379
Faste ansatte kvinner 31
Faste ansatte totalt 410
Innleide arbeidstakere kvinner* 0


I have attached the workbook.

Thank you in advance for any help