[NTG-context] Blocks in a macro?

[Michal Kvasnicka]

Good evening.

How can I include \begin<block> ... \end<block> into a macro?

I have defined:
    \defineblock[question]
    \defineblock[answer]
    \defineenumeration[question][location=serried, coupling=answer]
    \defineenumeration[answer][location=serried, coupling=answer]
    \hideblocks[answer]
I'd like to simplify my code from
    \beginquestion \startquestion question ... \stopquestion \endquestion
    \beginanswer \answer answer ... \par  \endanswer
to
    \q{question ...}{answer ...}
\q begin something like this:
    \def\q{%
       \beginquestion \question #1\par \endquestion
        \beginanswer \answer #2\par  \endanswer
    }

But no question/anwer is written into .tub file (only the beginning/end 
of those blocks).

Any hint?
Many thanks. Your sincerely
Michal Kvasnicka