YOU SAID:

never doing that again, Ok?

INTO JAPANESE

二度とそれをやらない、わかりましたか？

BACK INTO ENGLISH

Did you understand that you will not do it again?

INTO JAPANESE

二度とやらないことをご存知ですか？

BACK INTO ENGLISH

Do you know that you will never do it again?

INTO JAPANESE

二度とやらないことをご存知ですか？

BACK INTO ENGLISH

Do you know that you will never do it again?