Cannot open Drawing via API in HOPEX

[alros]

In MEGA 2009 SP5 we opened a Drawing using the Java API in this way:

MegaDrawing drawing = (MegaDrawing) megaObject.callFunction("Drawing", "RO");

However, the same code returns null (drawing == null) when run under HOPEX V1R2. The documentation still says, that you must open a drawing in VB using

megaObject.Drawing("RO")

What is the proper way to open a drawing in HOPEX V1R2?

[alros]

This might be caused by the same issue as in this question, since we try to open the drawing after the initial MetaCommand Macro is done.