Thank you so much!!!
Solved! Go to Solution.
The only thing you can do is using session properties or custom user action. Session property can be configured in Dynatrace GUI. You can get value from css selector, metadata, js variable or cookie. So from this point you will have put value that you need to one of those elements by modifying angular code.
You can create user action as well via js api, interesting value can be set as action name (for example). For analysis better is first approach. There is no option to instrument js code the same as you can do it with java , .net etc