---
id: use-custom-parameters
title: Use Custom Parameters
---
Custom parameters in your queries offer a flexible way to introduce variables without directly modifying query parameters. This guide will walk you through creating, utilizing, and calling queries with custom parameters.
### Adding Custom Parameters
1. Open the query panel and select the query you want to add custom parameters to.
2. Navigate to the **Parameters** section in the top bar.
3. Click the **+** button to add a custom parameter.
4. For each parameter, specify:
- **Name:** Identifier for the parameter.
- **Default value:** A constant string, number, or object.
### Syntax for Utilizing Parameters
Use `parameters.
` in your query to employ custom parameters. Note that parameters can only be used within the query where they are defined.
### Example: Create Row in ToolJetDB with Custom Parameters
Let's assume we have a ToolJetDB table with the following columns: `name`, `email`, and `contact`. We will create a new row in the table using custom parameters.
- Create a new ToolJetDB query, select a table from the dropdown and select the `Create Row` operation.
- Add the following parameters:
1. **name:** `name` and **value:** `Shubh`
2. **name:** `email` and **value:** `shubh@email.com`
3. **name:** `contact` and **value:** `4638563845`
- Add the columns to the query and use the custom parameters to set the values.
| Column | Value |
| ------ | ----- |
| name | `{{parameters.name}}` |
| email | `{{parameters.email}}` |
| contact| `{{parameters.contact}}` |
- Finally, execute the query to create a new row in the ToolJetDB table with the values provided in the custom parameters.
### Example: Providing Custom Parameters Using Events
In this example, we will demonstrate how to use custom parameters in a query by providing values from an event. We will use execute a REST API query and on its success, we will execute the ToolJetDB query to create a new row with the response data.
1. **Create a REST API Query:**
- Method: `GET`
- URL: `https://reqres.in/api/users?page=2`
2. **Add a Success Event:**
- Name: `onSuccess`
- Action: `Run Query`
- Query: `Create Row`
- Parameters: The parameters that you have added to the query will automatically be available in the event.
1. **name:** `{{queries.getSalesData.data.data[0].name}}` This will use the name from the first record of the response data.
2. **email:** `{{queries.getSalesData.data.data[0].email}}` This will use the email from the first record of the response data.
3. **contact:** `4638563845` provided as a constant value just for demonstration.
3. **Execute the REST API query and observe the new row created in the ToolJetDB table.**
**Note:** You can also use parameters in JavaScript queries. Learn more about [JS Query Parameter](/docs/data-sources/run-js/#js-parameters).
