Filling the ValueTree as a form attribute from the query

"SELECT
|   InventoryBalance.GoodsItem,
|   InventoryBalance.Warehouse AS Warehouse,
|   SUM(InventoryBalance.QuantityBalance) AS Quantity
|FROM
|   AccumulationRegister.Inventory.Balance AS InventoryBalance
|
|GROUP BY
|   InventoryBalance.GoodsItem,
|   InventoryBalance.Warehouse
|TOTALS BY
|   Warehouse";

Result = Query.Execute();

SelectionWarehouse = Result.Choose(QueryResultIteration.ByGroupsWithHierarchy);

While SelectionWarehouse.Next() Do
    TreeData = GoodsByWarehouses.GetItems();
EndDo;

// Getting the ValueTree from the query
TreeFromQuery = Query.Execute().Unload(QueryResultIteration.ByGroups);
// Placing the ValueTree on the form
ValueToFormAttribute(TreeFromQuery, "GoodsByWarehouses");