---
title: "Create Parameter"
slug: "create-parameter-tag-integration"
updated: 2026-04-14T13:54:04Z
published: 2026-04-14T13:54:04Z
canonical: "docs.mapp.com/create-parameter-tag-integration"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.mapp.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Create Parameter

Create a parameter to define which data points are captured from your website and used for tracking.

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## Prerequisites

- Access to Tag Integration
- A data layer or URL structure providing the required values

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## Procedure

1. Navigate to **Tag Integration**.
2. Open **Parameters**.
3. Click **Create parameter**.
4. Enter a **Name** for the parameter.
5. (Optional) Enter a **Description**.
6. Select the **Type**:
  - **JavaScript variable** – Reads values from the data layer or JavaScript.
  - **URL parameter** – Reads values from URL parameters (must be UTF-8 encoded).
  - **Mobile parameter** – Used for mobile tracking environments.
7. Enter the **Definition** of the parameter.
8. Click **Create**.

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## Definition Guidelines

The definition specifies how the parameter value is accessed.

- For JavaScript variables, use the variable name or data layer reference.
- Example using `wts`: `wts.get('customerID')`
- Example using other variables: `arrayname[variableposition].variablename`
- Do not use double quotation marks in the definition.

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## Result

The parameter is created and appears in the Parameter Overview. It can now be used in plugins and rules.

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## Best Practices

- Use consistent naming conventions for parameters.
- Ensure that the defined value exists in the data layer or URL.
- Test parameter values before using them in tracking logic.