[Sellize]

Try this. You seem to be using alot of undefined things...

PHP код:

CMD:skin(playerid,params[])
{
    new playerState = GetPlayerState(playerid);
    if(playerState == PLAYER_STATE_SPAWNED)
    {
        new skinid;
        if(sscanf(params, "i", skinid)) return SendClientMessage(playerid, yellow, "Usage: /skin [skin ID]") ;
        if(skinid < 0 || skinid > 311) return SendClientMessage(playerid, red, "Invaild skin ID!");
        new Jstring[128];
        format(Jstring, sizeof(Jstring), "You have set your skin ID to %i.", skinid);
        SendClientMessage(playerid, 0xFDEE00FF, Jstring);
        SetPVarInt(playerid,"Useskin",1);
        SetPlayerSkin(playerid, skinid);
        return 1;
    }
    else return ShowMessage(playerid, red, 1);
}