C# KeyBindings with special characters

I'm trying to use the "Ctrl+]" shortcut in CommandBars within a C# application.  I was able to do this in Visual Basic 6, but cannot get CommandBars to recognize the KeyBinding from within C#.

I've tried the following:

const int FCONTROL = 8;
const int VK_OEM_6 = 0xDD; // ]} key on US keyboards
commandBars.KeyBindings.Add(FCONTROL, ']', ID_OF_COMMAND);
commandBars.KeyBindings.Add(FCONTROL, VK_OEM_6, ID_OF_COMMAND);

and neither of these statements work.  What integer value do I need to pass to represent the ']' key?  Thanks in advance.