# Write Column (preview)

> Write Column activity that writes a column of data to an Apple Numbers table.

`UiPath.AppleNumbers.Activities.WriteColumn`

## Description

Writes a column of data to an Apple Numbers table.

This activity writes a single column to a table, either overwriting an existing column, inserting a new column, or appending one at the right edge. You supply the column either as a `System.Data.DataColumn` or as a collection of objects, and the activity returns a snapshot of the table after the write.

:::note
This package only runs on macOS systems with Apple Numbers installed.
:::

## Project compatibility

Windows | Cross-platform

## Configuration

You can configure the activity and its properties as follows:

* **File (local path)** - The path to the Apple Numbers spreadsheet file.
  + **Use a File Resource** - Switches to a file resource reference instead of a plain path. You can browse for a file in either mode; this only changes how the reference is stored.
  + **Use Local File** - Switches back to the plain path field, restoring your previous value.
* **Sheet** - The name of the sheet containing the table.
* **Column** - The column letter to write to, for example, `B`. Required for the Overwrite and Insert write modes, and ignored for Append Right.
* **Data column** - The column data to write, as a `System.Data.DataColumn`. Used when **Data type** is set to `DataColumn`.
* **Array column** - The column data to write, as an array or `IEnumerable` of objects. Used when **Data type** is set to `ArrayColumn`.
  :::note
  Numbers, booleans, and dates in the column keep their type when written; any other value is handled by Numbers as typed input, the same as if it had been typed directly into the cell.

  For more details on the plus menu options, check [Designing automations](https://docs.uipath.com/studio/standalone/latest/user-guide/designing-automations).
  :::

### Properties panel

#### Input
* **Table name** - The name of the table. Defaults to the first table in the sheet if not specified.

#### Options
* **Data type** - Which column input to use. Select one of the following options:
  + **DataColumn** - Use the value from **Data column** (a `System.Data.DataColumn`). This is the default option.
  + **ArrayColumn** - Use the value from **Array column** (an array or `IEnumerable` of objects).
* **Write mode** - How to write the column. Select one of the following options:
  + **Append Right** - Adds a new column at the right edge. The **Column** letter is ignored. This is the default option.
  + **Overwrite** - Replaces the existing column at the specified letter.
  + **Insert** - Inserts a new column at the specified letter, shifting existing columns right.

#### Output
* **Table information** - Information about the table after the operation, including sheet name, table name, row count, column count, and header row count.