Reverse proxy + scripting? Can they be combined?

I am trying to create a mechanism to manipulate queries going through an SSH tunnel.

The setup:

• ngrok/tuns.sh to assign a tunnel to a remote FQDN, eg. https://mytest.tuns.sh/path is sent to local port 8011
• Proxyman reverse proxy listens on port 8011 and sends to a remote https://remote-service.com/path
• Proxyman scripting manipulates that request (to change the path)

I cannot get that last part to work unfortunately. The call is made and transits through Proxyman, but scripting is not working on it.
I've tried to define a script for URL remote-service.com/* and also another for mytest.tuns.sh/*, and all subpaths, but neither is being called (as evidenced by a lack of logs, and the "Summary" for those requests not showing that script being used.

Any idea what I'm doing wrong, or whether this is not possible?

Reproduce the listed ngrok/tuns.sh to port 8011 to reverse-proxy flow, then inspect the request Summary and scripting logs to determine where script matching stops. Done means establishing whether scripting supports this reverse-proxy and SSH-tunnel setup, and documenting or correcting the behavior.