Folder action to add song to playlist

Scripting Forums AppleScript | Mac OS X
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#1 
property myPlaylist : "xyz"
on adding folder items to my_folder after receiving the_files
	repeat with i from 1 to number of items in the_files
		tell application "iTunes"
			launch
			try
				
				set this_file to (item i of the_files)
				set this_file to last track of playlist myPlaylist
	end try
		end tell
	end repeat
end adding folder items to

I have attached this script as folder action to the folder “xyz”. I want to add (when new files are added) the files of folder “xyz” to my playlist “xyz”. Can someone help me?