Can not update object from Cloud Code

[GongChen1107]

I use cloud code to save an object but it come up 404 error,bu I use Android SDK to update the same object it can works and returns 200.
GET /parse/hPV6SQ8qqRr0wWN9Bv9whzZrhSVbYdrMDoI0wReW/classes/GameScore 200 7084.473 ms - 216
POST /parse/hPV6SQ8qqRr0wWN9Bv9whzZrhSVbYdrMDoI0wReW/functions/androidInputCode 200 9853.957 ms - 17
PUT /parse/hPV6SQ8qqRr0wWN9Bv9whzZrhSVbYdrMDoI0wReW/classes/GameScore/my647z8iLW 404 4056.681 ms - 40
GET /parse/hPV6SQ8qqRr0wWN9Bv9whzZrhSVbYdrMDoI0wReW/classes/GameScore 200 4421.380 ms - 216
PUT /parse/hPV6SQ8qqRr0wWN9Bv9whzZrhSVbYdrMDoI0wReW/classes/GameScore/my647z8iLW 200 8162.046 ms - 40
PUT /parse/hPV6SQ8qqRr0wWN9Bv9whzZrhSVbYdrMDoI0wReW/classes/GameScore/my647z8iLW 200 22745.619 ms - 40