# io.github.libtmux.kotlin.WindowBuilder.env

- **Module:** io.github.libtmux.kotlin
- **Package:** io.github.libtmux:libtmux-kotlin
- **Language:** Kotlin
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-java/blob/f56392b5d9bc7f1f9c1631842333fb90f3d82d40/libtmux-kotlin/src/main/kotlin/io/github/libtmux/kotlin/Dsl.kt#L120
- **Page:** https://libtmux.org/en/kotlin/latest/reference/io-github-libtmux-kotlin-windowbuilder-env/

```
public fun env(name: String, value: String)
```

Adds a variable to the new window's environment, keeping any already set.

## Parameters

- `name` (`String`)
- `value` (`String`)