Change the font size in crystal report

Hi ,
I am using crytal report but my requirement is that .
I am using One formula field inside the formula field ,I have One string I want to change the font of a string .
How can I change the font of a string inside the formula editor.
Plz any one can Help me

Thanks Advanced............
Regards
NaltuPlace that formula field in the report
Goto format field and gto font and change that|||I am not putting the fomula field inside report .Again I am using it in the other formula field .|||Naltu,

I have a similar problem...have you found a solution to this??

thanks,