dateadd and max error

Hello,

I am trying to calculate the sales for the past year( going back a year, not civil year), using a slicer.

This means that when I choice in a slicer dates between (23-01-2014 and 23-02-2016) I want the formula to read only the bigger value (23-02-2016). This I got the measure to do it with:

FILTER(all('date table'[Date]);'date table'[Date]<=MAX('date table'[Date])

But now I need to get it to go back one year and I tried :

FILTER(all('date table'[Date]);'date table'[Date]<=DATEADD(MAX('date table'[Date]);-1;YEAR)))

But I get the following error:

Can anyone help me?

Thank you

Inês Costa