Install an In-house Chrome Extension?

Need help installing an in-house Chrome extension. This is what I’m using but isn’t working.

<?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">
<plist version="1.0">
  <dict>
		<key>ExtensionSettings</key>
<dict>
 <key>Extension ID</key>
 <dict>
   <key>installation_mode</key>
   <string>force_installed</string>
   <key>update_url</key>
   <string>https://URL/Extension.crx</string>
 </dict>
</dict>
  </dict>
</plist>