[Konstantinos]

pawn Код:

GameTextForPlayer(playerid,"~g~Skin Changed",2000,3);
pInfo[playerid][Skin] = modelid; // Assign the new skinid there.
SetPVarInt(playerid,"Useskin", 1);
GetPlayerSkin(playerid);
SetPlayerSkin(playerid, modelid);

Also:

pawn Код:

if(IsPlayerConnected(playerid))
{
    // code
}
else return ShowMessage(playerid, red, 2);

That's really useless.