# Toggle Switch Widget
**General Setting**
User can change following things in Toggle Switch widget:
* Name for widget which will be used data reference
For Example, if widget name is 'Switch', then data of widget is referenced as Switch.data
* Show title - User can show/hide widget title
* Title Color
* Background Color
#### Widget Setting
In Widget Setting option, user can change following parameters:
* Key - key parameter of JSON Object which will define state of switch.
User can manage state of switch using MQTT or Actions. To change state of switch, user need to send data in following format.
```
{"imageKey":true/false}
OR
{"imageKey":1/0}
// 'imageKey' is set as key in widget form.
```
#### Source
User can select a source mode as MQTT or Action.
**Using MQTT**
Here, to change state of switch user can publish JSON object on given **imageData** MQTT topic. The JSON object will be as below. No need to provide \ while providing the MQTT topic.
```
{"imageKey":true/false}
OR
{"imageKey":1/0}
// 'imageKey' is set as key in widget form.
```
**Using Action**
Here, to change state of switch, output of the action should contain key-value pair with 'imageKey' key. User can also update the widget either onLoad or periodically by providing refresh interval.
#### Event Handling
Button onChange event is provided. User can choose MQTT or Action mode for onChange event.
**Using MQTT**
User needs to provide following parameters:
* event - Select **onChange** event from dropdown
* mode - Select mode as **MQTT**
* topic - Enter topic name directly. No need to provide accountID.
* Data parameters - Add new data parameter item. Each data parameter item represent a key-value pair. So select required parameter and give key name to it.
As shown in below images, for onClick event, MQTT mode is selected. It means when state of switch changes, it will publish configured data parameters on given MQTT topic.
So, as per the configuration shown in above images, when button state changes, JSON object with **imgKey-UserRole** as key-value pair gets published on **buttonData** topic. Please refer below image for final output.
**Using Action**
User needs to provide following parameters:
* event - Select **onChange** event from dropdown
* mode - Select mode as **action**
* Action ID - Select required Action ID from dropdown
As shown in below images, for onChange event, **action** mode is selected. It means when switch state changes, it will trigger given Action with configured action parameters.
#### Example
If we configure Toggle Switch Widget as below:
1. key - toggleKey
and set source type for widget as MQTT and topic configured is 'data'. And if we publish following JSON Object over 'data' topic then Toggle Switch Widget will look as shown in image.
```
// Data over configured MQTT Topic
{
"toggleKey":true/1
}
OR
{
"toggleKey":false/0
}
```
 
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