Synchronising contacts using syncml

When you say the example does nothing, do you mean it doesn't run, or it runs but does nothing?

You need to specify to the SyncML application various things, such as the ip addreess or url of the server you are going to connect to, what the username and password of the account on that server is, what it is you want to sync etc.
All of this is specified using the profile and task and transport APIs etc. Sp you need to set all that information and then actually start the sync.

I don't have any code examples but knowing the above looking at the APIs and the example code it should be figureoutable.