How to set a goal for a site on Bitrix?

Question

1C-Bitrix

How to set a goal for a site on Bitrix? I already have the code from Yandex, the problem is that Bitrix erases my goal, which I write in index.html. The next day there is already no trace of my goal!
The site itself I
register here:

And on the site it is necessary here:

What kind of nonsense? Haven't seen worse cms yet! In general, it is difficult to make any changes, and if you do, it’s not a fact that they will be saved, and this is not to mention its cache

Answer 1

1. CMS is quite working, of course it has its own subtleties, but it is very working.
2. If you set a goal, then set it correctly. What event do you need to catch? Opening a form / clicking a button / submitting a form ? And if the user has adblock enabled, the form will be sent?