Automator workflow to batch-convert MS Word documents (.doc, .docx) into PDF using Apple Pages

workflow.scpt

(*
* embed this applescript into an Automator workflow to batch-convert
* MS Word documents (.doc, .docx) into PDF using Apple Pages.
*)

on run {input, parameters}
	
	tell application "Pages"
		activate
		repeat with doc in input
			tell application "Finder"
				set fname to name of (info for doc)
				set thePath to (container of doc) as alias as text
				set newFile to (thePath & fname & ".pdf")
			end tell
			try
				open doc
				set thisDoc to front document
				save thisDoc as "SLDocumentTypePDF" in newFile
				close thisDoc saving no
			on error
				display dialog "Some problem occurred.
						File " & fname & "
						could not be saved as PDF."
			end try
		end repeat
	end tell
	
	return input
end run

Hey, this is a great workflow. I've been trying to adapt it to convert .doc to .pages but couldn't get it to do that (I get the error message every time). What do I have to put instead of "SLDocumentTypePDF" if I want to convert to .pages? Thanks for your help!