# io.github.libtmux.SessionSpec.SessionSpec.Builder.environment

- **Module:** io.github.libtmux.SessionSpec.SessionSpec.Builder
- **Package:** io.github.libtmux:libtmux
- **Language:** Java
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-java/blob/c3517519ee799428a809ce6deb1708c8be289cd1/libtmux/src/main/java/io/github/libtmux/SessionSpec.java#L234
- **Page:** https://libtmux.org/reference/java/io-github-libtmux-sessionspec-sessionspec-builder-environment/

```
io.github.libtmux.SessionSpec.SessionSpec.Builder.environment(variables: Map<String, String>) -> Builder
```

Adds several variables to the new session's environment, keeping any already set.