SDK Java Spreadsheet CalcAddIns example

Hi all,

I tried to build sdk/examples/java/Spreadsheet example, and build was
successful - CalcAddins.oxt assembled and was installed in LO, I see
it in extensions manager.

But when I open CalcAddins.ods, I see #NAME? when functions from addin
is called (=org.openoffice.sheet.addin.calcaddins.getmyfirstvalue(),
=org.openoffice.sheet.addin.calcaddins.getmysecondvalue(E4)) so I
guess that it means that no functions are loaded from the extension.

I tested with current nightly build (5.1) debug, and with production
LO 4.4.3.2 (libre office fresh in archlinux) with the same results.

I tried to build with JDK 1.7 and 1.8, also no joy.

I hoped to see some related log output in LO debug build, but I do not
see any errors related to java extension.

Any ideas what to do now?

Does CalcAddins example work for anybody?

Thanks in advance,
Mike