my code like but the po is still hold. so how to invoke remove hold action in code
POOrderEntry instance2 = PXGraph.CreateInstance<POOrderEntry>();
instance2.Document.Current = (PX.Objects.PO.POOrder) instance2.Document.Search<PX.Objects.PO.POOrder.orderType, PX.Objects.PO.POOrder.orderNbr>((object) field0, (object) field1);
instance2.Document.Current.Hold = new bool?(false);
instance2.Document.Update(instance2.Document.Current);
instance2.Save.Press();