How to get on hand quantity from the physical inventory over all storage dimensions

static void Jimmy_InventOnHandPhysical(Args _args)
{
    InventOnHand    inventOnHand = new InventOnHand();
    InventDimParm   inventDimParm;
    ItemId          _ItemId = "10-1000";
;
    inventDimParm.initFromInventDim(InventDim::findOrCreateBlank());
    inventOnHand.parmInventDimParm(inventDimParm);
 
    inventOnHand.parmItemId(_itemId);
    inventOnHand.parmLocationId("PA2101");
    print inventOnHand.availPhysical();
    print inventOnHand.physicalInvent();//实际库存
    print inventOnHand.onOrder();//在单
    print inventOnHand.availReservation(Noyes::Yes);//在单
    print inventOnHand.postedQty();//已过账的数量
    print inventOnHand.reservPhysical();//实际预留
    print inventOnHand.costPricePcs();//成本价
    print inventOnHand.deducted();//已扣减
    print inventOnHand.reservOrdered();//订单预留
    
    pause;
}