Hi Paul,

you have to use the \setupletterlayer command to change the entries in 
the reference line.

\usemodule[letter]

\setupletter
   [name={Joe User}]

\setupletterlayer
   [reference]
   [list={name,date}]

\startletter
...
\stopletter


If you don’t get a title for your entry you can add it with the 
\setuplettertext command.

\setuplettertext[de][mobile=Mobilfunknummer]


Wolfgang

> Paul Menzel <mailto:pmenzel+ntg-context@molgen.mpg.de>
> 24. Juni 2018 um 15:40
> Dear ConTeXt folks,
>
>
> I am trying to customize the reference line in a letter.
>
> ```
> $ context --version
>
> mtx-context     | ConTeXt Process Management 1.01
> mtx-context     |
> mtx-context     | main context file: 
> /usr/share/texmf/tex/context/base/mkiv/context.mkiv
> mtx-context     | current version: 2017.05.15 21:48
> ```
>
> The example from Wolfgang’s `correspondence.pdf` [1] doesn’t work for me.
>
> ```
> \setupletter
>   [name={Joe User},
>    date=\currentdate]
>
> \setupletter
>   [list={name,date}]
> ```
>
> Only the date is shown in the reference line.
>
> The solution from chapter 9 also does not work. Still only the date is 
> shown.
>
> ```
> \setupletter
>   [name={Joe User},
>    date=\currentdate]
>
> \setupletterstyle[reference][list={name,date}]
> ```
>
> Do I need to create a new customized reference line to add other 
> fields next to the date to the reference line?
>
>
> Kind regards,
>
> Paul
>
>
> [1]: https://bitbucket.org/wolfs/correspondence/downloads/
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