[NTG-context] Command for specifying et al limit

[Jethro Djan]

Dear list,

I am trying to specify that 'et al’ should be appended after the first author if paper has multiple authors. It seems from the mkiv-publications.pdf manual that it should work like this but it doesn’t. Here is my MWE:

\startbuffer[ref]

@Article{bb:2017,
  author  = {Bronstein, Michael M. and Bruna, Joan and Cohen, Taco and Veličković, Petar},
  journal = {arXiv preprint arXiv:2104.13478},
  title   = {Geometric Deep Learning: Grids, Groups, Graphs, Geodesics, and Gauges},
  year    = {2021},
}

\stopbuffer

\definebtxdataset[ref]
\setupbtx[dataset=ref]
\definebtxrendering
    [ref]
    [apa]
    [
        dataset=ref,
    ]
\usebtxdefinitions[apa]
\usebtxdataset[ref][ref.buffer]
\setupbtx[
  dataset=ref,
  etaldisplay = 1,
  etallimit = 1,
]

\starttext

\cite[author][bb:2017] says in their paper \cite[bb:2017] 

\startsection[title={References}, number=no, incrementnumber=no]
    \placelistofpublications[ref][method=dataset]
\stopsection

\stoptext

Thanks in advance.

Jethro