Help getting file comment

How can I display the file’s comments? My script (below) does not work.

on adding folder items to this_folder after receiving these_items
	repeat with an_item in these_items
		--set file_info to info for an_item
		set file_comment to comment for an_item
	end repeat
	display dialog file_comment
end adding folder items to

Try something like this:

on adding folder items to this_folder after receiving these_items
	repeat with an_item in these_items
		tell application "Finder" to set file_comment to comment of an_item
	end repeat
	display dialog file_comment
end adding folder items to

Thank you!

I wish I could get errors, but AppleScript delivers none that I can see.