Enable spell checker for new dictionary

[jordillado]

Hi.
I have a mail server with Zimbra 8.7 installed, I added the Catalan dictionary and a Catalan theme provided by btactic.
The installation worked correctly but when writing a new message the spell check button does not appear.
I have tried other languages ​​integrated in Zimbra and I do not appear in all, in these if: English, Russian, French, German; But in these non: Romanian, Slovenian, Turkish and others.
Has anyone added new dictionaries and was able to activate the spell checker?
A greeting and thank you very much for your contribution.