Can someone show me the proper method to make the identifier in the following a named named destination when the PDF is created?

<chapter style="-uslm-lc:I81" id="id177c9bfd-a3d3-11e9-973a-9c709b2fe26d" identifier="/us/usc/t2/ch1">

A CSS rule like this should do it:

chapter {
    prince-pdf-destination: attr(identifier)
}

chapter {
prince-pdf-destination: attr(identifier,string)
}

"i was not using "string" as part of the attr