Ovveride Create Shipment logic

Yes. It is my custom grid

Yes. For now i have this
 

public delegate void CreateShipmentDelegate(CreateShipmentArgs args);
        [PXOverride]
        public virtual void CreateShipment(CreateShipmentArgs args, CreateShipmentDelegate baseMethod)
        {
            baseMethod(args);

            var packages = Base.Packages.Select().FirstTableItems;

            foreach (var package in packages)
            {
                var salesOrder = (SOOrder)PXSelectJoin<SOOrder,
                            InnerJoin<SOLine, On<SOOrder.orderType, Equal<SOLine.orderType>,
                                                And<SOOrder.orderNbr, Equal<SOLine.orderNbr>>>>,
                            Where<SOLine.lineNbr, Equal<Required<SOLine.lineNbr>>>>
                            .Select(Base, package.LineNbr);

                if (salesOrder != null)
                {

                }

                /*SelectedPackageContents selectedPackageContents = new SelectedPackageContents
                {
                    ShipmentLineNbr = package.LineNbr,
                    ShipmentNbr = package.ShipmentNbr,
                    PackedQty = package.Qty,
                };

                SelectedPackageContentsView.Insert(selectedPackageContents);*/
            }
        }

When shipment creating i want to make something like this
 

But in upper grid i can not take Qty of items in package and also there is no InventoryID in package. The main problem not to take Qty for package

 @Kandy Beatty @Laura02 

I am trying to take quantity that package have and item that package have on shipment screen packages tab
But if i do in this way 
 

        public virtual void CreateShipment(CreateShipmentArgs args, CreateShipmentDelegate baseMethod)
        {
            baseMethod(args);

            var packages = Base.Packages.Select().FirstTableItems;

            foreach (var package in packages)
            {
                var test = package.InventoryID;
                var test1 = package.Qty;

}

inventoryID is null and Qty is 0.0. As i understood CreteShipment have this logic when it's calculating weight for package based on qty and item. How can i get this values? I goes throught CreateShipment method and have not found anything that could help me with that problem