Your examples don't seem to be correct.

[rollsch]

your example shows a constructor that takes 5 values

GoogleEvent googleEvent = new GoogleEvent("mydomain.com",
"Event Category",
"Event Action",
"Event Label",
eventValue);

However the actual constructor only takes 4 values, it seems there is no way to pass the domain to GoogleEvent.

public GoogleEvent(string category, string action, string label, int? value)

I've fixed the code so it works, but have you uploaded the latest version?

edit: It seems the github code is out of date, but your zip file is not out of date. Have you committed the latest version?