YOU SAID:

That didn't work out so well.

INTO JAPANESE

うまくいきませんでした。

BACK INTO ENGLISH

Did not work.

INTO JAPANESE

動作しませんでした。

BACK INTO ENGLISH

It did not work.

INTO JAPANESE

それは動作しませんでした。

BACK INTO ENGLISH

It does not work.

INTO JAPANESE

それは動作しません。

BACK INTO ENGLISH

It does not work.