Sub ModifyAdvertisementToOverrideMaintenanceWindows(connection, 		 _
													existingAdvertisementID)

	' Define a constant with the hex value for the OVERRIDE_MAINTENANCE_WINDOW. 
	OVERRIDE_MAINTENANCE_WINDOWS = &H00100000

	' Get the specific advertisement instance to modify. 
	Set advertisementToModify = connection.Get("SMS_Advertisement.AdvertisementID='" & existingAdvertisementID & "'")

	' List the existing property values.
	Wscript.Echo " "
	Wscript.Echo "Values before change: "
	Wscript.Echo "--------------------- "
	Wscript.Echo "Advertisement Name:			" & advertisementToModify.AdvertisementName
	Wscript.Echo "Advertisement Flags: (integer) " & advertisementToModify.AdvertFlags

	' Set the new property value.
	advertisementToModify.AdvertFlags = advertisementToModify.AdvertFlags OR OVERRIDE_MAINTENANCE_WINDOWS

	' Save the advertisement.
	advertisementToModify.Put_ 

	' Output the new property values.
	Wscript.Echo " "
	Wscript.Echo "Values after change:  "
	Wscript.Echo "--------------------- "
	Wscript.Echo "Advertisement Name:			 " & advertisementToModify.AdvertisementName
	Wscript.Echo "Advertisement Flags (integer):  " & advertisementToModify.AdvertFlags

End Sub

public void ModifySWDAdvertisementToOverrideMaintenanceWindows(WqlConnectionManager connection, 
															 string existingAdvertisementID)
{
	// Define a constant with the hex value for OVERRIDE_MAINTENANCE_WINDOW. 
	const Int32 OVERRIDE_MAINTENANCE_WINDOWS = 0x00100000;

	try
	{
		// Get the specific advertisement instance to modify. 
		IResultObject advertisementToModify = connection.GetInstance(@"SMS_Advertisement.AdvertisementID='" + existingAdvertisementID + "'");

		// List the existing property values.
		Console.WriteLine();
		Console.WriteLine("Values before change:");
		Console.WriteLine("_____________________");
		Console.WriteLine("Advertisement Name:			" + advertisementToModify["AdvertisementName"].StringValue);
		Console.WriteLine("Advertisement Flags (integer): " + advertisementToModify["AdvertFlags"].IntegerValue);

		// Modify the AdvertFlags value to include the OVERRIDE_MAINTENANCE_WINDOWS value.
		advertisementToModify["AdvertFlags"].IntegerValue = advertisementToModify["AdvertFlags"].IntegerValue | OVERRIDE_MAINTENANCE_WINDOWS;

		// Save the advertisement with the new value.
		advertisementToModify.Put();

		// Reload the advertisement to verify the change.
		advertisementToModify.Get();
					
		// List the existing (modified) property values.
		Console.WriteLine();
		Console.WriteLine("Values after change:");
		Console.WriteLine("_____________________");
		Console.WriteLine("Advertisement Name:			" + advertisementToModify["AdvertisementName"].StringValue);
		Console.WriteLine("Advertisement Flags (integer): " + advertisementToModify["AdvertFlags"].IntegerValue);
}
	catch (SmsException ex)
	{
		Console.WriteLine("Failed to modify advertisement. Error: " + ex.Message);
		throw;
}
}