How to make http_cookie work with certain content in nginx?

Question

Nginx

I'm new to the nginx theme, so don't kick me.
In general, they will go straight to the heart of the matter. There is a rule that triggers a certain setting for processing pages.
The task is to make this rule work not only with the name of the cookie, but also with its content.
Let's say the cookie "TEST" has "1" by default, but in some cases it can change to "2", how to make the rule work only with the content "1" or "2"

if ($http_cookie ~* "TEST") {

}

p.s I read the official nginx documentation, but did not understand what can be used to achieve the desired. Yes, I'm dumb)

Answer 1

$cookie_name

if ($cookie_test ~ "^(1|2)$") {

}