# Server.setEnvironment(_:to:in:)

- **Module:** Server
- **Package:** libtmux-swift
- **Language:** Swift
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-swift/blob/f02a4668570e1cc5198c941413750e021f42c214/Sources/LibTmux/Environment.swift#L71
- **Page:** https://libtmux.org/reference/swift/server-setenvironment(_-to-in-)/

```
Server.setEnvironment(_:to:in:)(name: String, to: String, in: EnvironmentScope) -> TmuxReply
```

Sets a variable, replacing whatever was there.

## Raises

- `TmuxError`