Script to stop transfers, not close the program, when VPN down

[g3nius]

Hey so like the topic says I am working on a script that will stop all the transfers when my VPN goes down. Currently the program is set to quit (but this takes a while) This is not my code and was changed from https://forum.transmissionbt.com/viewtopic.php?f=4&t=12330&p=56986&hilit=script+to+quit+vpn#p56986

on idle
	set activeInterfaces to do shell script "ifconfig -lu"
	if activeInterfaces = "lo0 en0 en1 fw0 utun0" then
		tell application "uTorrent" to quit
		tell application "Growl"
			notify with name ¬
				"VPN Down" title ¬
				"VPN Down" description ¬
				"I have quit uTorrent." application name "Drop BitTorrent"
		end tell
	end if
	return 5 -- 30 is default value, but it doesn't hurt to include it here
end idle

Does any one know what command I could substitute for the line: ??

tell application "uTorrent" to quit

stop doesn't seem to work and I can't really guess. I also can't seem to find a key command to start/stop transfers

Also what would I add to reenable the transfers?

something like:

if activeInterfaces = "lo0 en0 en1 fw0 utun0 tun0"
tell application "uTorrent" to start (or something to that effect)
if activeInterfaces = "lo0 en0 en1 fw0 tun0 utun0"
tell application "uTorrent" to start (or something to that effect)