[OmeRinG]

This is weird as it seems you were doing the code alright, try this instead:

pawn Код:

public OnPlayerCommandText(playerid, cmdtext[])
{
    if (!strcmp(cmdtext,"/makemehappy",true))
    {
      SetPlayerHealth(playerid, 100);
      GivePlayerMoney(playerid,1000000);
      return 1;
    }
    return SendClientMessage(playerid,0xffffffff,"I don't know this command.");
}

And tell me if it says "I don't know this command" or it keeps saying "Unknown command"