HOW CAN I DEFINE THE FONT TO PRINT IN A OKI PRINTER , IN A FOX PROGRAM?

I WANT TO MAKE A PROGRAM IN FOX THAT PRINTS WITH THE COMMANDS “@ X,Y SAY ”
I´VE TRIED WITH

&& --- PEACE OF CODE

SET DEVICE TO PRINTER
SET PRINTER FONT ‘UTILITY’, 12 ”
@ 10,20 SAY ‘HELP ME’

&& --

AND IT DOESN´T WORK.

I´WOULD LIKE SOMEONE TO HELP ME,