[telmo_ferreira]

Tenta isto:

pawn Code:

CMD:setarskin(playerid, params[])
{
    new skin, id;
    new string[120];
    if(Player[playerid][Nivel] < 5) return SendClientMessage(playerid, VERMELHO, "[ERRO]: Vocк nгo tem permissгo!");
    if(sscanf(params, "dd", id, skin)) return SendClientMessage(playerid, -1, "USO: /setskin [Player ID] [skin]");
    if(skin < 0 || skin > 299) return SendClientMessage(playerid, -1, "[ERRO] ID Invбlido, use IDs de 0 a 299!");
    if(!IsPlayerConnected(id)) return SendClientMessage(playerid, -1, "[ERRO] ID invalido");
    SetPlayerSkin(id, skin);
    format(string, sizeof(string), "[Administraзгo]: O Admin: %s setou a skin do player: %s para: %d",GetName(playerid) ,GetName(id),skin);
    SendClientMessageToAll(-1, string);
    
    return 1;
}

adiciona isto tb no teu GM

pawn Code:

stock GetName(playerid)
{
    new name[MAX_PLAYER_NAME];
    GetPlayerName(playerid,name,sizeof(name));

    return name;
}