How to install Groovy scripting engine in Camunda Run?

Hello
I am trying to do a process in Camunda Run. I cannot run groovy scripts however.
I read that I have to put the groovy scripting engine jar file in /userlib folder.
However I do not know the name of this jar file and where to find it. Could you point it to me?

Thanks in advance

You can download the full Camunda BPM distribution. There you’ll find a jar file in the lib folder that contains groovy in its name. Copy that file to the configuration/userlib folder, start camunda via start.bat and it’ll work.

It was an older version (2.4) compared to the current Groovy version (3), however it seems working.
Thank you