---
title: "Slider Node Parameters"
description: "Reference for Slider (action:custom:slider) node parameters in Node Inspector — text, variable, messengers, slider elements, validation."
---

# Slider Node Parameters

The **Slider** node (`action:custom:slider`) displays an interactive slider with selectable elements. The client scrolls or selects an element from the list. Typically used for selecting from a long list (categories, products, dates). In **Node Inspector** (right panel) the following sections are available:

## Basic Settings

- **Message text** (messageText) — text the client sees before the slider.
- **Output Variable** (outputVariable) — where to store the selected element (text or value).

## Messengers (supportedMessengers)

- **Supported channels** — limit which messengers show the slider (Telegram, Viber, WhatsApp, Widget, Facebook, etc.).
- If the list is empty — the slider is shown on all channels.

## Slider Elements (items)

- **Element list** — each element has:
  - **Text** — what the client sees (e.g., category name).
  - **Value** — what is stored in the variable (can match text or be separate).
- Elements are displayed as a scrollable list or slider depending on the messenger.

## Validation

- **Type** — none (no validation), required (selection required).
- **Error message** — text the client sees if no element was selected (for required).

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## Related Documents

- [Create scenario](/en/scenariobuilder/how-to/create-scenario.md)
- [Use action in scenario](/en/scenariobuilder/how-to/use-action-in-scenario.md)
- [Scenario editor overview](/en/scenariobuilder/explanation/what-is-scenario-editor.md)