launchd plist to run a reverse ssh tunnel

<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE plist PUBLIC -//Apple Computer//DTD PLIST 1.0//EN
http://www.apple.com/DTDs/PropertyList-1.0.dtd >
<plist version='1.0'>
<dict>
<key>Label</key><string>com.automatthew.ssh_tunnel</string>
<key>UserName</key><string>matthew</string>
<key>ProgramArguments</key>
<array>
        <string>/usr/bin/ssh</string>
        <string>-nNT</string>
        <string>-R 1389:127.0.0.1:389</string>
        <string>matthew@slice1.automatthew.com</string>
</array>
<key>Debug</key><false/>
<key>Disabled</key><false/>
<key>OnDemand</key><false/>
<key>RunAtLoad</key><false/>
</dict>
</plist>