There is no need to subsitute. The value @integer/google_play_services_version takes care of it. Just make sure you have the latest Google Play Services library which is updated.
You can find it under google-play-services_lib>res>values>version.xml if you wish to add the number rather than @integer/google_play_services_version.
<?xml version="1.0" encoding="utf-8"?>
<resources>
<integer name="google_play_services_version">4030500</integer>
</resources>