how to show dataset row as header in sql server reporting

hi
 
i have made report using ssrs 2008. i have page header.
 
In tablix, i need to show a row as a header on every pages.
page header working fine, but now i need add new row in header,but that row has a dataset row.
 
so how i show this row as a header. in this row i have a hardcode value.
 
Please help