Use debug on health monitor to retrieve lost radius secret

Hi

Is it possible to use debug function on health monitors to retreive the radius secret?

Found this old blogpost http://socpuppet.blogspot.com/2016/11/how-to-recover-lost-big-ip-f5-secret.html and followed the steps

1) Created a health monitor with a random username and password plus a random secret. Enabled debug

2) Edit the health monitor and entered the hashed secret from the radius setup

3) Added the health monitor to a pool and attached the pool to a new virtual server used to test

4) Check in /var/log but no debug log is created

Is something missing or is it not possible to do this anymore?

Best regards

Daniel