On Thu, 19 Mar 2020, mf wrote:

> Il 19/03/20 11:20, Fabrice Couvreur ha scritto:
>> Hi,
>> this file did not pose any problems but today yes.
>> Thank you.
>> Fabrice
>> 
>> \starttext
>> \startluacode
>> local letters_1 = { "A", "B", "C", "D", "E", "F", "G", "H", "I", "J" }
>> local letters_2 = { "1", "Année", "1998", "1999", "2000", "2001", "2002",
>> "2003", "2004", "2005","2006" }
>> context.startxtable({"align={middle,lohi},
>> width=1.2cm,offset=0.8ex,bodyfont=9pt"})
>> 
>
> context.startxtable( { align = "middle,lohi", width = "1.2cm", offset = 
> "0.8ex", bodyfont = "9pt" } )
>
> The argument is a lua table. Values are usually strings.
>
>> context.startxrow({"background=color,backgroundcolor=green"})
>
> context.startxrow( { background = "color", backgroundcolor = "green" } )
>
> ... and so on.

A table with just one string entry also works, but lua strings cannot be 
split across lines. So, if you remove the newline after 
"align={middle,lohi}, that also works.

Aditya