Change Table Columns Based on Slicer Selection

I understand there is no straight forward way to do this. I was able to achieve this without having to use bookmarks.

Here’s how I solved this:

• Unpivot your columns (A, B, C, etc.) in Power Query to get a “long” format
• Create a mapping table that specifies which columns (attributes) appear for each year, for example:
• Create a YearSelection slicer table (distinct years).
• Set up relationships so filtering flows like this:
  • YearSelection → YearColumnMapping → Columns Lookup → Fact Table
• Build your matrix visual with:
  • Rows: USER
  • Columns: Attribute
  • Values: Value
• When you select a year, only the corresponding columns appear in the matrix.

This method is fully dynamic, scalable, and avoids bookmarks or multiple stacked tables.

I have the PBIX of the model and visual so you can see exactly how the relationships and slicer interact but not able to attach it here. 

Hello stsmith67,

You can achieve this using the "Switch" function in DAX:

Selected Columns = 
SWITCH (
    SELECTEDVALUE ( 'Year'[Year] ),
    2021, SELECTCOLUMNS ( Table, "A", [A], "B", [B], "C", [C] ),
    2022, SELECTCOLUMNS ( Table, "A", [A], "B", [B], "D", [D], "G", [G] ),
    2023, SELECTCOLUMNS ( Table, "A", [A], "D", [D], "E", [E] ),
    BLANK()
)

Is there a way to change within the select statement? For example, select if 1=1 then column A vs B , column 2, if x=y then C vs D, column 4???  

Try this one 
https://www.youtube.com/watch?v=CHGmuzxu_BE (in the description there is a link to 1st video that might be needed to continue with this one)

Hello, has this been resolved?