VS 2010 RDLC Report Fixed header

Im creating one rdlc report in VS 2010.

I am using tablix.

I wanted fixed header.

After struggling sometime, I could  find the solution.

here is the way.

After you design the report, see bottom of your report. You can find "Row Groups" & "Column Groups"
section.

 for column groups there will be a down arrow button. click the button. You will get "Advanced Mode"  menu.

then you can see the two rows in "row groups" section.

first one (static) is header section. second one(details) is details section.

select the static row and click F4. it opens properties window.

then set FixedData to TRUE.