Yes, I have in my config.js file:
config.contentsLanguage = 'fa';
config.contentsLangDirection = 'rtl';
config.extraPlugins = 'bidi';
and in admin->config for plugin:
toolbarCanCollapse:false,
removePlugins:'elementspath',
resize_enabled:false,
autogrow:false,
entities:false,
contentsLanguage:'fa',
contentsLangDirection:'rtl',
toolbarCanCollapse:false,
removePlugins:'elementspath',
resize_enabled:false,
autogrow:false,
entities:false
but it still doesn't work.