X++ Code for Item on hand quantity in AX 2012

static void OnHandQtyDimensionWise(Args _args)
{
    InventOnhand            inventOnhand;
    InventDim               inventDim;
    InventDimParm           inventDimParm;
    
    ItemId                  itemId = '0001';
    InventQty               inventQty;

    inventDim.InventSiteId = 'CENTRAL';
    inventDim.InventLocationId = 'ANNARBO';

    inventDim = InventDim::findOrCreate(inventDim);
    inventDimParm.initFromInventDim(inventDim);

    inventOnhand = inventOnhand::newParameters(itemId,inventDim,inventDimParm);
    inventQty = inventOnhand.availPhysical();
    info(strFmt('Available: %1 ',inventQty));
}