[Exist-open] Serialization

[Roy W. <gar...@ya...>]

Hi,
Pre 5.x this used to work for converting special characters, e.g., &lt; to <, when outputting HTM:

let $cleanedAnswer := util:serialize($wrans//Answer/Value/text(),"method=text")
This, however, doesn't work:
let $cleanedAnswer := serialize($wrans//Answer/Value/text(), map{"method" : "text"})
What am I  missing?
Thanks as ever,Roy