Hi All 

I have custom module which is completely developed in Japanese strings (i.e adding Japanese strings in fields, actions, views etc.)

it completely in Japanese language now but I want to add English translation to it. I have generated en_US.po file and added all English strings to respective Japanese strings. when I restart server, upgrade custom module and changed user language to English nothing is translated to English. I have tried so many times to translate this (by seeing blogs and google) but nothing works.

Please help me to fix this issue. Your suggestions would be really appreciated.