Reacting when stats cross specific threshold

The only way I found to monitor active sessions is to create a complete iRule monitoring: https://devcentral.f5.com/s/feed/0D51T00006i7MGlSAM

 

However, It's seems a very aggresive method (too much variables and processing), we would like to have less impact in our production enviroment.

 

I wonder if it's possible to get the current active connection statistic using something like this: https://clouddocs.f5.com/api/irules/STATS__get.html

 

Anyone knows how to do it?

 

An example of using will be also useful (with a default statistic, not custom)...

 

KR, Dario.