I think I updated it to the latest version.
I put "[param:4]" in the dialogue line field to see what the actual text was, and it said "1". It does seem to work if I put "[var:1]" in, which correctly gives me "Conv…
update: I thought I found it and tried using [param:4] as text in the menu to affect field but that did not work. Was that meant to have worked? If so, I'll take some screenshots.