Piwigo and Piwik - Get Piwigo user in stats

Good morning,

I have just installed the Piwigo plugin Statistics to insert code Piwik on all pages of my gallery photograph.
On the contrary, I wonder how to recover the user Piwigo at the level of statistics Piwik?

Somebody in an idea to perform this action?

Beforehand thanks for your returns.

You can use Custom Variables to record the username Custom Variables Analytics - Analytics Platform - Matomo

But you would have to edit Piwigo to do that, to call the Javascript function