Problem mit CMDs

if(strcmp(cmd, "/mieten", true) == 0)
	{
        if(IsPlayerConnected(playerid))
		{
				new hirefee = HireCost(GetPlayerVehicleID(playerid));
				if(GetPlayerVehicleID(playerid) >= 112 && GetPlayerVehicleID(playerid) <= 130)
				{
					if(SBizzInfo[0][sbProducts] == 0)
					{
						GameTextForPlayer(playerid, "~r~Ausverkauft", 5000, 1);
						return 1;
					}
					if(PlayerInfo[playerid][pPbiskey] == 0)
					{
					GameTextForPlayer(playerid, "~w~Keine Gebühren", 5000, 3);
					TogglePlayerControllable(playerid, 1);
					return 1;
					}
					if (GetPlayerMoney(playerid) <  SBizzInfo[0][sbEntranceCost])
					{
						SendClientMessage(playerid, COLOR_GRAD2, "   Du hast nicht genug Geld !");
						return 1;
					}
				}
				if(HireCar[playerid] != 299)
				{
					gCarLock[HireCar[playerid]] = 0;
					UnLockCar(HireCar[playerid]);
					SendClientMessage(playerid, COLOR_GREY, "Du musst als erstes dein Fahrzeug /zuruckgeben !");
				}
				for(new i=0; i<MAX_PLAYERS; i++)
				{
				    if(HireCar[i] == GetPlayerVehicleID(playerid))
				    {
				        SendClientMessage(playerid, COLOR_GREY, " Jemand anderes hat es schon gemietet !");
				        return 1;
				    }
				}
    			ConsumingMoney[playerid] = 1;
				GivePlayerMoney(playerid,-SBizzInfo[0][sbEntranceCost]);
				SBizzInfo[0][sbTill] += SBizzInfo[0][sbEntranceCost];
				ExtortionSBiz(0, SBizzInfo[0][sbEntranceCost]);
				SBizzInfo[0][sbProducts]--;
				HireCar[playerid] = GetPlayerVehicleID(playerid);
				OnPropUpdate();
				PlayerPlaySound(playerid, 1052, 0.0, 0.0, 0.0);
				format(string, sizeof(string), "~w~Vergiss nicht!!! ~b~/zuruckgeben",hirefee);
				TogglePlayerControllable(playerid, 1);
    			new vid = GetPlayerVehicleID(playerid);
    			new engine,lights,alarm,doors,bonnet,boot,objective;
    			GetVehicleParamsEx(vid,engine,lights,alarm,doors,bonnet,boot,objective);
  				SetVehicleParamsEx(vid,VEHICLE_PARAMS_ON,lights,alarm,doors,bonnet,boot,objective);
				GameTextForPlayer(playerid, string, 5000, 3);
				return 1;
		}
		return 1;
	}
	if(strcmp(cmd, "/zuruckgeben", true) == 0)
	{
	    new idcar = GetPlayerVehicleID(playerid);
	    if(IsPlayerConnected(playerid))
		{
			if(HireCar[playerid] != 299)
			{
   				if(idcar == HireCar[playerid])
			    {
			        TogglePlayerControllable(playerid, 1);
			    }
			    SetVehicleToRespawn(HireCar[playerid]);
				gCarLock[HireCar[playerid]] = 0;
				UnLockCar(HireCar[playerid]);
				HireCar[playerid] = 299;
				SendClientMessage(playerid, COLOR_GREY, " Fahrzeug abgegeben! ! !");
				return 1;
			}
		}
		return 1;
	}