public string Command { get; set; }

Public Property Command As String
	Get
	Set

public:
property String^ Command {
	String^ get ();
	void set (String^ value);
}

When MenuItem.Action is set to MenuItemAction.CallBack or MenuItemAction.PostBack the command is passed to DayPilotCalendar.EventMenuClick event.
When MenuItem.Action is set to MenuItemAction.JavaScript it is passed to the JavaScript event handler.

The typical commands will be "Delete" or "Open".