Column header repeat don´t work in ssrs 2008

I have a report with a tablix that has row headers. I want to repeat the headers on each page, so I activated the flag "Repeat header columns on each pa开发者_开发百科ge". But nothing happens... this worked with earlier versions of ssrs...

Answer can be found here.

You may also need to set KeepWithGroup to "After" in that Report Group properties. Need to switch to Advanced mode to see this option. How to switch to Advanced mode: click littel downward triangle on the right from "Column Groups" heading