I've installed the CC, eberything seemed works properly. Then I tried to change the players appearance, such as Van Nistelrooy wearing long sleeves shirts, Barthez wear short sleeves. After that I saved it as *.pkg file.
Then I install it. But no changes has been made when I play the game, why?

Can anybody help me?

Did you wait until the package was COMPLETELY installed? Can you see "package installed" in the very top part of the CC window?