Hi all, Thanks to you, I'm not at your level with Lua, but I'm learning thanks to you

Hans, I compiled your code and I get an error message :

lua error       > lua error on line 50 in file ./table_1.tex:

token call, syntax: [ctxlua]:11: unexpected symbol near '='

13     \startluacode
14          function document.MyTable(specification)
15    
16              local pattern    = specification.pattern
17              local action     = specification.action
18              local conversion = specification.conversion or "Characters"
19    
20              local n = #pattern
21    
22          --  context.startxtable { align = "middle,lohi", width = "0.8cm",
23 >>  offset = "0.8ex", bodyfont = "9pt", framecolor = "cyan" }