There seems to be a method missing in the TimeScaleValue object of
WIN32OLE. See:

irb(main):126:0> tsval.Value
WIN32OLERuntimeError: unknown property or method `Value'
    HRESULT error code:0x80020006
      Unknown name.
	from (irb):124:in `method_missing'
	from (irb):124
	from ^C:0

and yet

irb(main):127:0> tsval.ole_get_methods
=> [StartDate, EndDate, Value, Index, Application, Parent]

Anyone have an idea what's going on here? Is WIN32OLE just not fully
implemented?