YOU SAID:

fillIn('[test-id="fldAddMfaTarget"]', '(123)123-1234');

INTO JAPANESE

fillIn ('[テスト id ="fldAddMfaTarget"]'、'(123)123-1234');

BACK INTO ENGLISH

fillIn (' [test id = "fldAddMfaTarget"] ',' (123) 123-1234 ');

INTO JAPANESE

fillIn (' [テスト id ="fldAddMfaTarget"] '、' (123) 123-1234 ');

BACK INTO ENGLISH

fillIn (' [test id = "fldAddMfaTarget"] ',' (123) 123-1234 ');