Analytics - event tracking for clicking phone number

How to implement event tracking code for clicking phone number in “Contact as section” (field “Phone number”)?

If I put code for example:
<a href="tel:55555555555" onclick="ga('send', 'event', 'Phone Call Tracking', 'Click to Call', '55555555555', 0);">55555555555</a>
onclick command is automatically removed.

Good evening

Sorry but this is not our support related question, you have to search for solutions in the WWW, any code will work in our theme if they work in any other theme