---
title: "validate username · RUAL Documentation"
description: "Validates username format - allows letters, numbers, underscores, hyphens, and dots only"
canonical: https://docs.rual.nl/block-types/condition/condition_validate_username
language: en
---

# validate username

This block is part of the [`condition`](https://docs.rual.nl/block-types/condition) group and was last modified in core [`v14.0.3`](https://docs.rual.nl/core-versions/140003).

Validates username format - allows letters, numbers, underscores, hyphens, and dots only

- username required `value`

- max. length `max_length` `number`

- valid `condition`

| `special characters` |
| --- |

### Core Releases