In setvip, something like (example of my aio systtem):
_player.getInventory().addItem("", Config.AIO_ITEMID, 1, _player, null);
and to remove
_player.getInventory().destroyItemByItemId("", Config.AIO_ITEMID, 1, _player, null);
_player.getWarehouse().destroyItemByItemId("", Config.AIO_ITEMID, 1, _player, null);
WH check in case, he put the item into wh.