Rare characters creating accounts from zmprov ca

[spAlex]

Hello all.

I'm having problems to create accounts from command zmprov ca.
When I create the account, I set the attribute "displayName" with chars like á, ª, ü.
When I see this value in the Administrator Console, this chars appears like extrange symbols, but I can change and save they right.

I've configure the spell dictionary from spanish language, and the command locale prints this result:
LANG=es_ES.utf-8
LC_CTYPE="es_ES.utf-8"
LC_NUMERIC="es_ES.utf-8"
LC_TIME="es_ES.utf-8"
LC_COLLATE="es_ES.utf-8"
LC_MONETARY="es_ES.utf-8"
LC_MESSAGES="es_ES.utf-8"
LC_PAPER="es_ES.utf-8"
LC_NAME="es_ES.utf-8"
LC_ADDRESS="es_ES.utf-8"
LC_TELEPHONE="es_ES.utf-8"
LC_MEASUREMENT="es_ES.utf-8"
LC_IDENTIFICATION="es_ES.utf-8"
LC_ALL=

Can anybody help me, please?
I don't know what I can read more.
Thanks in advance.