Sending variables

Hi guys,
I have installed this absolutely great software but i have a question.
On website i want to track i have in the source code all sorts of java script variables about the users like : country, user id, first name, last name, prefered language, etc.
What i would like to achieve is to use these outputted variables by adding them to the tracking code so that they’re send to piwik.

Is this exactly what the “Custom Variables” feature does or am i mistaking?

Thanks so much,
Mike

Yes if you read the page you would know the answer to your question… Custom Variables Analytics - Analytics Platform - Matomo