---
title: Variables
slug: lowcode-en/variables
description: Learn how to configure variables for integration flow in this document. Find step-by-step instructions on adding variables, including name, description, and storage options. Discover how to save changes and understand the glossary which includes definitio
docTags: 
createdAt: 2023-08-24T13:01:56.685Z
---

This tab configures the variables that will be used in the integration flow. **Variables** are objects capable of retaining and representing a value or expression during the flow's runtime.

# Step by Step

To add a variable, click the "**Add**" button. Fill in the fields:

- Variable name;
- Description;
- Store in database: whether the variable should be stored internally in the Low Code data model;
- Return variable: whether the variable should be included in the output JSON object returned at the end of the flow execution;
- Value list: Whether the variable contains a list of values;
- Mandatory input variable for execution: This option should be selected if the flow execution depends on the variable's existence before execution begins;
- Variable type;
- Initial variable value, which can be a constant or a value returned by script execution.

:::hint{type="info"}
✏️ ***Note:*** Internal storage implies direct writing to the database. Depending on the flow's usage, not saving to the database might be an option.

In the example below, we have a flow that fetches an address based on a ZIP code:

Although the "store in database" option isn't selected for the ZIP code, it will be saved to the database when the fields are automatically filled and the record is saved.

![](https://api.archbee.com/api/optimize/pu5VMc-2TW3GQX4ly5Xp7/_WU0bOHWnL9CyiF-l5ZZK_image.png)
:::

Click the "**Save**" button to include the variable.

:::hint{type="warning"}
⚠ ***Warning!*** To **save changes** permanently, you must click the "**Save**" button in the Flow Data tab.

![](https://api.archbee.com/api/optimize/pu5VMc-2TW3GQX4ly5Xp7/7zHqvEJjgtZqyHDieBdiW_image.png)
:::