LAUNCHXL-CC2650: Unable to implement GATT_PROP_NOTIFY in SimpleLink Academy ProjectZero

I am trying to have all my ProjectZero characteristics set to GATT_PROP_NOTIFY, so that my ios App can be set up to act only when a characteristic value changes in ios CoreBluetooth function didUpdateValueForCharacteristic.

I believe I should be adding GATT_PROP_NOTIFY to the appropriate services Characteristic declaration in ProjectZero's led_service.c as follows:

/*********************************************************************
* Profile Attributes - Table
*/

static gattAttribute_t LED_ServiceAttrTbl[] =
{
  // LED_Service Service Declaration
  {
    { ATT_BT_UUID_SIZE, primaryServiceUUID },
    GATT_PERMIT_READ | GATT_PROP_NOTIFY,
    0,
    (uint8_t *)&LedServiceDecl
  },
    // LED0 Characteristic Declaration
    {
      { ATT_BT_UUID_SIZE, characterUUID },
      GATT_PERMIT_READ | GATT_PROP_NOTIFY,  //dale add notify,
      0,
      &ls_LED0Props
    },
      // LED0 Characteristic Value
      {
        { ATT_UUID_SIZE, ls_LED0UUID },
        GATT_PERMIT_READ | GATT_PERMIT_WRITE | GATT_PERMIT_WRITE,
        0,
        ls_LED0Val
      },
    // LED1 Characteristic Declaration
    {
      { ATT_BT_UUID_SIZE, characterUUID },
      GATT_PERMIT_READ | GATT_PROP_NOTIFY,  //dale add notify,
      0,
      &ls_LED1Props
    },
      // LED1 Characteristic Value
      {
        { ATT_UUID_SIZE, ls_LED1UUID },
        GATT_PERMIT_READ | GATT_PERMIT_WRITE | GATT_PERMIT_WRITE,
        0,
        ls_LED1Val
      },
};

NOTE WHERE I HAVE ADDED 'GATT_PROP_NOTIFY'.

BUT, when I do this, the ios app first reports that the characteristic has notifying set to NO when it first discovers it AND when I try to have my ios App ask projectZero to set the notifying value set to YES, I get a 'There request is not supported' error as follows:

Discovered characteristic with properties:<CBCharacteristic: 0x1700be420, UUID = F0001111-0451-4000-B000-000000000000, properties = 0xE, value = <7c553720 957b0000 20050020 dd380020 d4380020>, notifying = NO>

and