I try to use DispatchHelper with Java API and it always return null. Then I try
to use it directly in OOBasic and it return null. I make this test under OO 2.2
and the same macro works.

Here the code that don't work under OO 3.1:
dim document   as object
dim dispatcher as object
document   = ThisComponent.CurrentController.Frame
dispatcher = createUnoService("com.sun.star.frame.DispatchHelper")
dispatcher.executeDispatch(document, ".uno:Copy", "", 0, Array())


Dispatcher is always null.