Exporting Secured PDF from indesign using apple script

Question

hi there, this is my first go at scripting,
basically what i am trying to do is:
tell indesign to turn on a layer called "proof" in the active document
then export pdf - set pdf preference to smallest file size, all pages, and secure the file WITH A PASSWORD so that it can be opened but not edited (unless by someone at my agency who knows this password). this easy enough to manually, but im sick of typing out a password everytime i save a proof.
then save to a specific folder on the desktop, using the already existing filename - so 'myfile.pdf'
the code below gives me this message "
error "Can’t make name of PDF export preferences into type Unicode text." number -1700 from name of «class DFpf» to Unicode text
could someone please help me word this properly? I tried first referring to a pdf preset instead of setting all the values ie set color bitmap etc but i couldnt get the password to work,
here is what i have so far, written from snippets that other people have tried:
tell application "Adobe InDesign CS4"
          tell active document
  try
                              set visible of layer "PROOF" to false
                    end try
  set docName to name
                    set baseName to text item 1 of docName
                    set ASTID to AppleScript's text item delimiters
                    set AppleScript's text item delimiters to "."
                    set AppleScript's text item delimiters to ASTID
          tell PDF export preferences
                    set acrobat compatibility to acrobat 4 --> create a 1.3 pdf
                    set use security to true
                    set disallow changing to true
                    set disallow copying to true
                    set disallow document assembly to true
                    set disallow extraction for accessibility to true
                    set disallow form fill in to true
                    set disallow notes to true
                    set disallow hi res printing to false
                    set color bitmap sampling DPI to 100
                    set grayscale bitmap sampling DPI to 100
                    set monochrome bitmap sampling DPI to 100
  --set image quality
                    set color bitmap quality to minimum
                    set grayscale bitmap quality to minimum
  --set fonts
                    set subset fonts below to 0
  --set security
                    set use security to true
                    set change security password to "editedit"
                    set disallow extraction for accessibility to false
                    set disallow copying to true
                    export format PDF type to "/Users/kimwilson242/Desktop/_PROOFS/" & name & ".pdf" without showing options
          end tell
end tell

Answer 1

tell application "Adobe InDesign CS5"
  -- prefs belong to app so use in tell app block
          tell PDF export preferences
                    set acrobat compatibility to acrobat 4 --> create a 1.3 pdf
                    set use security to true
                    set disallow changing to true
                    set disallow copying to true
                    set disallow document assembly to true
                    set disallow extraction for accessibility to true
                    set disallow form fill in to true
                    set disallow notes to true
                    set disallow hi res printing to false
                    set color bitmap sampling DPI to 100
                    set grayscale bitmap sampling DPI to 100
                    set monochrome bitmap sampling DPI to 100
  --set image quality
                    set color bitmap quality to minimum
                    set grayscale bitmap quality to minimum
  --set fonts
                    set subset fonts below to 0
  --set security
                    set use security to true
                    set change security password to "editedit"
                    set disallow extraction for accessibility to false
                    set disallow copying to true
          end tell
  -- now deal with the doc
          tell active document
                    try
                              set visible of layer "PROOF" to false
                    end try
                    set docName to name
                    set baseName to text item 1 of docName
                    set ASTID to AppleScript's text item delimiters
                    set AppleScript's text item delimiters to "."
                    set AppleScript's text item delimiters to ASTID
  -- use flexible path to user desktop… path strings are HFS (colon delimited)
                    export format PDF type to (path to desktop as text) & "PROOFS:" & name & ".pdf" without showing options
          end tell
end tell