Thanks a lot benfarmer, I was blind. The error is gone but the script still isn't correct because
it produces just a circle:

script:
var factory = moi.command.createFactory( 'cylinder' );
factory.setInput( 1, moi.vectorMath.createFrame() );
factory.setInput( 3, 10.0 );
factory.setInput( 5, 40.0 );
factory.commit();