automatic updates

Question

Hi,

I wanted to create an auto upate for my safari extension.

i got a update.plist on my webserver and it's in my manifest but for some reason it doesn't work. Can someone explain how i Create the plist file

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"&gt;
<plist version="1.0">
<dict>
   <key>Extension Updates</key>
   <array>
     <dict>
       <key>CFBundleIdentifier</key>
       <string>myappname</string>
       <key>Team Identifier</key>
       <string>myID</string>
       <key>CFBundleVersion</key>
       <string>1</string>
       <key>CFBundleShortVersionString</key>
       <string>1.0.1</string>
       <key>URL</key>
       <string>http://www.myurl.com/path/file.safariextz&lt;/string&gt;
     </dict>
   </array>
</dict>
</plist>

can what is the teamIdentifier and how do i fill this in correctly?