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THIS VERSION IS NOT FINISHED
-- There is a very severe bug which occurs when trying to overwrite a message with an accessor vi which is already executed in another part of the project. The build-in "Create Accessor"-function from NI crashes in such a scenario.
-- This is a first try to correct this. In fact there are two ways to do this: (a) Modify the already existing "BuildAccessor"-function, or (b) delete it and add everything to the "CopyClass.vi".
-- Here I went for the first way (but it is not finsihed, the BuildAccessor.vi is still empty).
-- This way seems rather slow, because he has to search for the correct VI once more.