[leong124]

Are you sure your code get run?
Try this:

pawn Код:

new sendername[MAX_PLAYER_NAME];
print("test1");
GetPlayerName(playerid, sendername, sizeof(sendername));
print("test2");
if(!strcmp(sendername, "FIBAgent"))
{
    print("test3");
    SetPlayerSkin(playerid, 165);
    print("test4");
}

or simply try the crashdetect plugin to see if there is any run-time error: https://sampforum.blast.hk/showthread.php?tid=262796

Since it works fine for me on 0.3c and 0.3d, I guess it should be the problem of your script.