Hi Sylvain,
The API doesn't expose any way to add performance metrics to the
system. Actually, DFA as a product doesn't really do this - the tags
placed on web pages are the other way that performance data can enter
the system.
As for there being another way to do this, it depends on what you're
trying to accomplish. If you're using Floodlight then it is based on
cookies and impossible to do it any other way. If you just need to
keep track of the number of transactions or the like, you could do
something like generating a Click Tracker tag and hitting the URL
yourself, once per event to tally.
Regards,
- Joseph DiLallo, the DFA API Team