How do I change the workbook font to Book Antiqua 8

Hi

I have a workbook with header and and results area in font Arial 8.

I want the entire workbook i.e. the headings and the results area to appear in Book Antiqua 8.

I went to Format > Style selected the Style name SAPBEXaggItem and hit the modify button and changed the font name to Book Antiqua and font size to 8.

I saved the workbook with a new name, added it to roles but then again when I open it I see that all the headings and the results area is in Arial 8 or even when I change the variable values its going back to Arial 8.

Can anyone please advise how to change this font name and size to Book Antiqua 8?

Thank you.

Regards,

Pavan.