Captioning (subtitles) in Adobe Encore CS6

Hi,

I'm actually preparing a Bluray Disc with Encore CS6 and need to put subtitles in Persian letters (looking like Arabic et written from right to left). Althought Encore has the language in the list, it writes it from left to right as we do with latin alphabet. The problem is that there's no specific option inside the menus to chose right-to-left paragraph direction like in Premiere Pro CC.

Does anyone know how I can make Encore to recongnise a different writing system ?

Thank you very much !