# tmux.GlobalSessionScope.SetHook

- **Module:** tmux.GlobalSessionScope
- **Package:** github.com/libtmux/libtmux-go/tmux
- **Language:** Go
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-go/blob/52968a3181c1c9e6d1b26c565d4b170968ae61c0/tmux/hook_runtime.go#L186
- **Page:** https://libtmux.org/en/go/latest/reference/tmux-globalsessionscope-sethook/

```
tmux.GlobalSessionScope.SetHook(ctx: context.Context, name: string, command: string) -> error
```

SetHook stores a global session-scope hook without refreshing models. Completed failures are secret-safe option errors; cancellation does not prove tmux did not accept the mutation.