date add -1 year doesnt work

Hi Anonymous 
Try to mark your dim date table as a date table, unfortunately, I am out if images that I can add to discussions.
So please refer to https://www.datacamp.com/tutorial/how-to-create-date-tables-in-power-bi-tutorial
the part of (Marking a Table as the Date Table
)

If it doesn't help 

Please provide sample data that covers your issue or question completely, in a usable format (not as a screenshot).
https://community.powerbi.com/t5/Community-Blog/How-to-provide-sample-data-in-the-Power-BI-Forum/ba-...
Please show the expected outcome based on the sample data you provided.

https://community.powerbi.com/t5/Desktop/How-to-Get-Your-Question-Answered-Quickly/m-p/1447523

If this post helps, then please consider Accepting it as the solution to help the other members find it more quickly.