Systemdspwaner extra_path not working?

Hello
I try to add some directory in the PATH of my users by modifying
c.SystemdSpawner.extra_paths = [os.path.join(USER_ENV_PREFIX, “bin”),“/usr/local/mytool/bin/”]
in jupyterhub_config.py of tljh.
But I see not modification of the PATH in the notebook of the user:
print(os.environ[“PATH”]) result in /opt/tljh/user/bin:/bin:/usr/bin.
What did I do wrong?

My configuration is to use PAM authenticator with only existing user
I use the last version of tljh.

Hello
I reply to my own question. In fact SystemdSpawner.extra_paths is working, but it seems that use sudo tljh-config reload hub, was not sufficient to see the modification, I have to clean also my local browser data cache and cookie.