work, but i change pin 18 by pin 12, gpio 18 i use for control and maybe are on conflict

I put this code "dtoverlay=pwm,pin=23,func=4" in config.txt but not work. 23 because gpio in raspberry zero is different i think. i use recalbox 4.0.1 and my programation level is 0

não estou conseguindo fazer o audio sair pelo gpio coloquei esse codigo "dtoverlay=pwm,pin=23,func=4" no arquivo config.txt. Estou usando o pino 23 porque os gpios do pi zero são diferentes do pi 3