> For the complete documentation index, see [llms.txt](https://docs.emobiq.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.emobiq.com/emobiq-client/006-actions-and-visual-logic/action-reference/react-native/control/callback.md).

# callback

## Description

Triggers a flow of actions.

## Input / Parameter

| Name  | Description                                           | Input Type | Default | Options | Required |
| ----- | ----------------------------------------------------- | ---------- | ------- | ------- | -------- |
| extra | The stored value that is passed to all the callbacks. | Any        | -       | -       | No       |

## Output

| Description                        | Output Type |
| ---------------------------------- | ----------- |
| Returns the formatted information. | Object      |

## Callback

### yesCallback

The functions to be executed.

## Example

In this example, we will put callback inside `Log.write` function.

### Steps

1. Drag a `button` component into the canvas and open the `Action` tab. Select the `press` event of the button and drag the `Log.write` function to the event flow.

   ![](/files/zWauEYvyJvzCcqnZgIco)
2. Change the `Log.write` value into function.

   ![](/files/0xHj8C1U3bQ4rC4SsA0G)
3. Put `Control.callback` function inside and under yes callback, call `Log.write` or any function(s) that required to call.

   ![](/files/MsFBUrt50AJsUU2aCMen)

### Result

1. The function will call yes callback(s) that specified under the `Control.callback` function.

   ![](/files/xoWBecDSNQIlSGegORxr)


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