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* {{color|blue|int[] PlaceOCOOrders(MTPA_OCOGroupType oco_type, params OrderParams[] orders);}} - submission of several orders within OCO group. This returns a list of successfully submitted order identifiers (IDs). The OCO group can be of two types:
# One Cancel Others means that the cancellation or execution of one order cancels all other orders.
# Reduce Size means that when Order#1 is filled for X contracts the amount number of the contracts of the other orders in the group is reduced by X number of contracts.
* {{color|blue|int PlaceOrder(OrderParams order);}} - submission of one order. If submission is successful the identifier (ID) of the order will be returned. Otherwise, an exception like “System.Runtime.InteropServices.COMException.” will be generated.
This structure can be received through the properties of '''Bars.Info.ASymbolInfo2''' for the current symbol.
[[Category:4. Understanding PowerLanguage .NET Programming Giude]]