Using env variables in Advanced Config

I have a setup with docker compose and i want to use env variables in the proxy host config.

dockercompose file:
``` 
...
   environment:
      myip: "1.1.1.1"
....
```

![Image](https://github.com/user-attachments/assets/f14fe97d-e66e-4317-bc95-6d283b94dfb1)

But unfortunately i cant use these env variables in config. Is there a guide to use env variables in config?