.TransiEnt.Storage.Heat.PackedBedStorage_L4.PackedBedStorage_L4.HotAirGeometry .TransiEnt.Storage.Heat.PackedBedStorage_L4.PackedBedStorage_L4.HotAirGeometrymodel HotAirGeometry = TransiEnt.Storage.Heat.PackedBedStorage_L4.Basics.StorageAirVolumeGeometry.BlockShapedUnit;