# Libtmux.Operations.set_environment

- **Module:** Libtmux
- **Package:** libtmux
- **Language:** OCaml
- **Kind:** function
- **Source:** https://github.com/libtmux/libtmux-ocaml/blob/205dfda49742592b479247049d186956e4a4cfe9/lib/libtmux.mli#L1139
- **Public owner:** Libtmux
- **Page:** https://libtmux.org/en/ocaml/latest/reference/libtmux-operations-set_environment/

```
val set_environment :
  ?hidden:bool ->
  Environment.scope -> name:string -> string -> unit Command.t
```

Set a local environment value for future pane processes. `hidden` defaults to false; hidden values remain internal to tmux. Existing processes keep their environment.

## Parameters

- `hidden?` (`bool`)
- `arg1` (`Environment.scope`)
- `name` (`string`)
- `arg2` (`string`)