What are regexes for variables in adf 12c?

Im trying to learn how to make loadtest for login on webservice based on adf 12c. But Ive got really big trouble with looking for a current regexes. Of course i found lots of them but only afrWindowId is actual.

I was trying with this tutorial but regex don`t find parse.https://www.redline13.com/blog/2018/01/oracle-adf-load-test/