Freezing column header shows only 2-3 rows.

[anandcognos]

Hello

When I try to freeze column headings by using built in feature of cognos i.e right click and freeze column headings, columns become freeze but crosstab shows only 3-4 rows, not utilizing whole page. I will appreciate any pointer on this. My crosstab is inside block with block size as 15 cms and show scrollbar when necessary.

Thanks