I want change AFP charset

I want change AFP charset
get garbled

freenas afp.conf ↓
================================

[Global]
uam list = uams_dhx.so uams_dhx2.so
max connections = 50
mimic model = RackMac
vol dbnest = yes

[testnas]
path = /mnt/ada1volume/dataset
cnid dev = no
unix priv = no

================================

i want change

[Global]
uam list = uams_dhx.so uams_dhx2.so
max connections = 50
mimic model = RackMac
vol dbnest = yes...

I want change AFP charset