Is there a method to modify game data saved on Gamecenter?

[iMore Question]

On Gamecenter how can I modify my progress of games for example I have a brother who already started playing a particular game and then it saved his progress on gamecenter then he stopped playing. then when I started playing that game at one point I decided to login to GM to save my progress and now it keeps offering to open my brothers save not and not save mine, If there is a way to delete/replace his then I can save my progress on GM, please help.

 

[Just_Me_D]

I don't you can, especially if your and your brother shared the same Apple ID on GameCenter.