reporting services - Column header direction is SSRS Matrix -

Hello, Is it possible to change the direction of column header values? Only the default header variants displayed in the horizontal direction, but I want to show values ​​in vertical direction. Is this possible?

I have tried for the past 3 days.

Which version are using SSRS? As far as I know, you can only change the orientation of text in chart axes (at least in 2005).