@Antons Sincovs, do You have any idea?

Hello Igor!

Zabbix regular expression engine does not use "global" or "multiline", so when testing regular expressions in online tools like "regex101.com" please, do make sure to disable those options in order to match the same result as in Zabbix:

As to the "\n" parameter - it stands for the capture group number and not the occurrence number. Here is an example of how this corresponds:

Thus with using regex preprocessing in one step - it is not possible to get other than the first matching occurrence. You need to either extract the necessary fragment by using additional preprocessing steps (prior to matching the needed value with regex) or consider using JavaScript as a preprocessing step. It could be something like:

var str = value;
const regex = /committed.*\s(\S+)L/ig;
return(str.match(regex)[1]);

You can use "Code Generator" tool on the "regex101.com" resource to assist you in generating JavaScript code:

The javascript code example I mentioned above is incomplete, but can provide you a hint for further actions. You can adjust the "regex" in the code or simply add an additional preprocessing step and extract the value in necessary form out of the javascript output.

Kind regards,
Antons Sincovs