# UiPath.Studio.Activities.Api.ExpressionEditor

> In this section you can find more information on how to build activities using **UiPath.Studio.Activities.Api.ExpressionEditor**.

In this section you can find more information on how to build activities using **UiPath.Studio.Activities.Api.ExpressionEditor**.

## CreateArgs
:::note
This feature was introduced in UiPath.Studio.Activities.Api v22.10.
:::

Holds expression editor creating arguments.

### Properties

| Type | Name | Description |
| --- | --- | --- |
| ModelItem | ModelItem | Model item to be used as OwnerActivity in Actipro ExpressionTextBox.  Can have variables.  Can be `NULL`, in which case a new/empty model item is created. |
| bool | IsMultiline | If `true`, supports multiple lines and is a pop-up window. |

## ISimpleExpressionEditorEvents
:::note
This feature was introduced in UiPath.Studio.Activities.Api v22.10.
:::

### Properties

| Type | Name | Description |
| --- | --- | --- |
| EventHandler | TextCommitted | Triggered when the text is committed (successful edit). |
| EventHandler | EditingCanceled | Triggered when the editing is cancelled (text did not change). |