> ## Documentation Index
> Fetch the complete documentation index at: https://docs.automate.ax/llms.txt
> Use this file to discover all available pages before exploring further.

> ## Agent Instructions
> Automate.ax automations are TypeScript programs.
> Use Bun for installation and command examples.
> Use Automate.ax for the product name and automate.ax for the package, CLI, and domain.
> Treat documented public APIs as current; do not invent transitional or deprecated names.

# Update List items

> Update one or more cells across Slack List items.

`slack.updateListItems` updates several cells in one Slack Lists API request.

```ts automations/complete-list-item.automation.ts theme={null}
import { automation, onDashboardRun } from "automate.ax"
import { slack } from "automate.ax/slack"

export default automation("Complete List item", () => {
  onDashboardRun({ title: "Complete List item" })

  slack.updateListItems({
    listId: "F012ABCD3EF",
    cells: [
      {
        rowId: "Rec012ABCD3E",
        columnId: "ColComplete",
        type: "checkbox",
        value: true,
      },
    ],
  })
})
```

## Inputs

| Input    | Type                                         | Required | Description                     |
| -------- | -------------------------------------------- | -------- | ------------------------------- |
| `listId` | `string`                                     | Yes      | List containing the records.    |
| `cells`  | `(SlackListItemField & { rowId: string })[]` | Yes      | One or more typed cell updates. |

Cell field types and values match [Create List item](/reference/integrations/slack/actions/create-list-item).

## Output

Returns `Signal<void>`.