### Description

In the documentation documentation for module pipelimit https://www.kamailio.org/docs/modules/4.2.x/modules/ratelimit.html has an error in example:

```# perform pipe match for authenticated user $var(limit) = 20; if (!pl_check("$au", "traildrop", "$var(limit)")) { pl_drop(); exit; } ```

If write algorithm "traildrop" in function pl_check, you every execution will get return code -2 and pipe not will be created.

### Possible Solutions

Change string "traildrop" on "TAILDROP"

### Additional Information

* **Kamailio Version** - output of `kamailio -v`

``` kamailio 4.2.3 ```