Setting Skin to Player resulted in Alex skin

I tried the setSkin() with the variables of the getSkinData() and getSkinId() function in Player. Even when i tried to reload the Player Data List:

PHP:

$player->despawnFromAll();
        foreach ($player->getServer()->getOnlinePlayers() as $player1)
            $player->getServer()->removePlayerListData($player1->getUniqueId());
        foreach ($player->getServer()->getOnlinePlayers() as $player1)
            $player->getServer()->sendFullPlayerListData($player1);
        $player->spawnToAll();

It still set the player to Alex skin.
It worked before the 1.0 update. What's the new way to set the skin?

 

PHP:

 $player->setSkin($player->getSkinData(), 'Alex');[PHP]

 

I want to set the player skin to another player skin, but not Alex!

 

Save another players skin to file and set to player

 

Yes, tried with .skin (zlib) and traditional .png, no result.

 

API Change! the Human's setSkin() doesn't have slim variable anymore. Sorry for wrong infomation.
And, the second variable should be

Code:

"Standard_Custom"

for someone who meets this problem and didn't notice the function change.

 

The function didn't change. You can also use Standard_CustomSlim as Skin ID. This also worked before 1.0.0.

 

I used SkinUtils of someone and it worked before 1.0.0, now it doesn't. You can yourself proof it.
EDIT: aliuly's SkinUtils

 

False, it still works with 1.0.0. But the change isn't viewable for the player who's skin was changed.

 

Of course it isn't viewable for the player who's skin was changed, but for other players except that player?

 

It was sometimes viewable for the own player, too BEFORE 1.0.0(/0.16.0, not sure ). For other players it's always visible.

 

So that means if you pass Boolean through the SkinId variable it still usable?

 

I only tested with valid SkinIDs. lol