Hi Idris,

you get the correct reference numbers when you apply the conversion of the section numbers
with the sectionconversionset-key, this does also mean you have to remove “conversion=R”
from chapter setup.

======
\defineconversionset [OLIE] [n,R,n,n,n,n] [n]

\setuphead[sectionconversionset=OLIE]
======

Wolfgang
Idris Samawi Hamid ادريس سماوي حامد
30. Juni 2018 um 22:42
Dear gang,

Chapter numbers are indicated roman numerals (conversion=R), all subsectioning by decimal numerals. See attached and below:

=======
\setuphead[chapter]   [alternative=normal,conversion=R]
\setuphead[subsection][alternative=text]
\setuphead[subsection][distance=0em,
                       textdistance=0.7em,
                       sectionstopper=.,
                       criterium=local]

\definestructureconversionset[OLIE][n,R,n,n,n,n][n]
\setupreferencestructureprefix [section] [default]
                               [prefixstopper=\zerowidthspace,
                                numberconversionset=OLIE]

% \setupreferencestructureprefix [chapter] [default]
                               % [prefixstopper=\zerowidthspace,
                                % numberconversionset=OLIE]

\setupwhitespace[big]
\starttext

\startchapter[title={First},reference={}]
\startsubsection[title={},reference={reference1}]
\input ward

See \in{Sections}[reference3] and \in{Section}[reference4].
\stopsubsection
\startsubsection[title={},reference={reference2}]
\input ward
\stopsubsection
\stopchapter

\startchapter[title={Second}]
\startsubsection[title={},reference={reference3}]
\input ward
\stopsubsection
\startsubsubsection[title={},reference={reference4}]
\input ward
\stopsubsubsection
\startsubsection[title={},reference={reference5}]
\input ward

See \in{Sections}[reference1] and \in{Section}[reference2].
\stopsubsection
\stopchapter
\stoptext
=======

So, e.g., Chapter II, Subsection 1, Subsubsection 1

In the references we get

2.1.1

But what we want is

II.1.1

Adding the following to the preamble doesn't appear to work:

\definestructureconversionset[OLIE][n,R,n,n,n,n][n]
\setupreferencestructureprefix [section] [default]
                               [prefixstopper=\zerowidthspace,
                                numberconversionset=OLIE]
What am I missing? Thanks in advance for any guidance.

Best wishes
Idris
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