---
title: "Correcting a wrong selection of belt hook size on the NavVis VLX 1/2 before processing"
slug: "correcting-a-wrong-selection-of-belt-hook-size-before-processing"
description: "A wrong belt hook size picked on the NavVis VLX 1 or 2 screen is fixable before post-processing, with no rescan. Edit sensor_frame_dynamic.json in the dataset folder under datasets_rec and set the hook size you actually used."
tags: ["G11", "G10", "G9", "Troubleshooting"]
updated: 2025-02-03T10:46:19Z
published: 2025-02-03T10:46:19Z
canonical: "knowledge.navvis.com/correcting-a-wrong-selection-of-belt-hook-size-before-processing"
---

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

# Correcting a wrong selection of belt hook size on the NavVis VLX 1/2 before processing

## Issue description

If you have selected a belt size in the UI of the NavVis VLX screen and proceeded to scan only to realize the wrong belt setting was selected, this can be corrected. No rescans are required.

> **Note:** This error must be corrected before post-processing.

## Scope

This procedure only applies to NavVis VLX 1 and 2. Belt selection in the NavVis VLX3 is automatic.

## Troubleshooting procedure

1. Go to the datasets_rec folder.
2. Select the specific dataset folder.
3. Open the file sensor_frame_dynamic.json with a standard text editor.
4. Change the belt size in the file to the one which you have actually used during scanning.
5. Change the code "hook": {"size": "XL"}
6. Save the file and continue with processing as usual.

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