I am manually tracking events with this code:
_paq.push(['trackEvent', 'docs', 'feedback', document.title, 0]);
The last argument, value, is either 1 or 0. Anything > 0 gets recorded correctly, for instance, 0.1, but 0 is not. I get a "-" in the table of events.
Related to this, I tried passing string values instead ("yes", "no"), and they do not get recorded at all (I always see a "-" in the events table).
I cannot find any details on the supported types/ranges for the value argument, can anybody please give me a clue as to how this exactly works or point me to the documentation about it?