How to increment a counter

* How to increment a counter
@ 2015-02-05 16:19 Otared Kavian
  2015-02-07 11:46 ` Wolfgang Schuster
  0 siblings, 1 reply; 3+ messages in thread
From: Otared Kavian @ 2015-02-05 16:19 UTC (permalink / raw)
  To: mailing list for ConTeXt users

Hi all,

I have a counter in an itemize environment which I need to increment by using
	\incrementcounter[NameOfTheCounter]

However this does not work in the following example, maybe due to the use of blocks, or some other reason.
I define two blocks, one for exercises, one for the solutions.
Then in each exercise I have a certain number of questions, presented with an itemgroup named Questions.
Analogously I have an itemgroup named Answers, which appear in the solution to an exercise. Now my problem is that some questions don’t have an answer included (for instance they are too easy…) and I need to increment the counter by saying
	\incrementcounter[Answers]

But this does not work, for an unknown reason. (See below)
Can anyone give an advice?
Thanks in advance.

Best regards: OK

%%%% begin question-answers-block.tex
\defineblock[Exoblock]
\defineblock[Solblock]

\defineenumeration[exo]
	[alternative=hanging,
	width=fit,
	text=Exercise, 
	stopper={.},
	before=, 
	after=\blank] 

\defineenumeration[solution]
	[alternative=hanging,
	width=fit,
	text=Solution of exercise, 
	stopper={.},
	before=, 
	after=\blank] 

\defineitemgroup[Questions]
\defineitemgroup[Answers]

\defineconversion[Questions][\numbers]
\defineconversion[Answers][\numbers]

\setupitemgroup[Questions][style=bold,
	width=1.5em,
	packed,
	alternative=hanging,
	stopper=,
	right=)]
\setupitemgroup[Questions][n]

\setupitemgroup[Answers][style=bold,
	width=1.5em,
	packed,
	alternative=hanging,
	stopper=,
	right=)]
\setupitemgroup[Answers][n]

\hideblocks[Exoblock]
\hideblocks[Solblock]

\starttext

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\beginExoblock
\startexo Solve the following problems.
\startQuestions

\startitem This is Question 1 of exercise 1. \stopitem

\startitem 
This is Question 2 of exercise 1.
\stopitem

\startitem This is Question 3 of exercise 1. An easy question, without answer\dots \stopitem

\stopQuestions
\stopexo
\endExoblock

\beginSolblock
\startsolution We give only solutions to non trivial questions\dots
\startAnswers

\startitem This is Answer 1 of exercise 1. \stopitem

\startitem This is Answer 2 of exercise 1. \stopitem

\stopAnswers
\stopsolution
\endSolblock
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\beginExoblock
\startexo Solve the following problems.
\startQuestions

\startitem This is Question 1 of exercise 2. \stopitem

\startitem 
This is Question 2 of exercise 2. An easy question, without answer\dots
\stopitem

\startitem This is Question 3 of exercise 2. \stopitem

\stopQuestions
\stopexo
\endExoblock

\beginSolblock
\startsolution We give only solutions to non trivial questions\dots
\startAnswers

\startitem This is Answer 1 of exercise 2. \stopitem

\incrementcounter[Answers] % <———— This does not have any effect
\startitem This is Answer 3 of exercise 2. \stopitem

\stopAnswers
\stopsolution
\endSolblock
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\chapter{List of Exercises}

\useblocks[Exoblock]

\chapter{List of Solutions}

\useblocks[Solblock]

\stoptext
%%%% end question-answers-block.tex
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