Problem in Hindi TTS in ePub

[rajneesh]

Few days back, after experimenting for a while, I was able to manually make a Hindi ePub file containing a few Hindi sentences, which could be read aloud by Google Play Books app in my Samsung Note using Google TTS. Mainly I had to change the language setting in some HTML files. I was thrilled by my success. I thought I have got it and now make a full fledged book. So I deleted it. It was my mistake. I could never get it again the way I wanted. The zipping did not work anymore the way it should. I am no techie. Then I thought of using Calibre. I set the language to Hindi wherever I could. But Hindi TTS does not work on the ePub files produced by Calibre. Any clue?