[AS] storing records in the document

Im trying to store some PDF-export settings in the document as a label key string.

1) How do I convert the record to one string?

2) How do I convert the string back to a record?

I want the return-value in this code to be "Value2".

setmyPDFsettingRecordto {PDFsettingA:"value1", PDFsettingB:"value2", PDFsettingC:"value3"}

tellapplication "Adobe InDesign CC 2014"

  tellactive document

  -- store string in document

  insert labelkey "PDFsettings" valuemyPDFsettingRecordasstring

  -- read string in document

  setPDFsettingstoextract labelkey "PDFsettings"

  endtell

endtell

setPDFsettingstosplit(PDFsettings, ",")

returnPDFsettingAofPDFsettings

tosplit(someText, delimiter)

  setAppleScript'stext item delimiterstodelimiter

  setsomeTexttosomeText'stext items

  setAppleScript'stext item delimitersto {""}

  returnsomeText

endsplit