Translate webogram into Arabic

[MesterPerfect]

Hello
I want to translate webogram into Arabic
I installed it on my server and tried to add Arabic, but it didn't work
I entered /js/locales and created ar-sa.json file
In it I put the contents of the en-us.json file and translated some phrases
After translating phrases, I modified the app.js file
I have modified this code

languages:
{
"en-us":"English",
"de-de":"Deutsch",
"es-es":"Español",
"it-it":"Italiano",
"ru-ru":"Русский",
"nl-nl":"Nederlands",
"pt-br":"Português (Brazil)"
}

After modification

languages:
{
"ar-sa":"Arabic",
"en-us":"English",
"de-de":"Deutsch",
"es-es":"Español",
"it-it":"Italiano",
"ru-ru":"Русский",
"nl-nl":"Nederlands",
"pt-br":"Português (Brazil)"

But it didn't work
Are there solutions?