# Wall parameter "Mark" is empty

## Problem

After you Create Assembly, you get a warning message **Wall parameter "Mark" is empty**

{% hint style="info" %}
**Floor parameter "Mark"** **is empty** for floors and ceilings

**Roof parameter "Mark"** **is empty** for roofs
{% endhint %}

<figure><img src="https://239424168-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FqtUsszuAWXIZhQhrvjnb%2Fuploads%2FJzfWpJ7dsDJZF6pbKk4Z%2FWall%20mark%20is%20empty.gif?alt=media&#x26;token=db101c7a-2fb8-4afc-a905-688b7b846a2d" alt=""><figcaption></figcaption></figure>

## Solution

1. Hover over **Number Elements**
2. Open the drop-down menu
3. Click **Number Walls/Floors/Roofs**

<figure><img src="https://239424168-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FqtUsszuAWXIZhQhrvjnb%2Fuploads%2FA1vsuT2zEnV5uiHVwKFx%2FNumber%20Walls.gif?alt=media&#x26;token=b3c42c0a-fb33-4806-b0eb-c8c150387219" alt=""><figcaption></figcaption></figure>

***

{% hint style="info" %}
If you can't find the answers you're looking for, please [contact our support team](https://helpdesk.besmart.software/support/tickets/new).
{% endhint %}