# libtmux.Observation:subscribe_format

- **Module:** libtmux.Observation
- **Package:** libtmux
- **Language:** Lua
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-lua/blob/547c9c4228e07ebf846690eb44da2eeeb6fde922/lua/libtmux/_internal/observation.lua#L389
- **Page:** https://libtmux.org/en/lua/latest/reference/libtmux-observation-subscribe_format/

```
libtmux.Observation:subscribe_format(pane: libtmux.Pane, fields: string[], options: libtmux.WatchOptions? = nil) -> libtmux.Request<libtmux.Watch>
```

## Parameters

- `pane` (libtmux.Pane):  A tmux pane.
- `fields` (string[])
- `options` (libtmux.WatchOptions?)