# Show highest scoring category on video

If you have a model that returns scores, you can display the highest scoring category as a text overlay on the video feed using the Nx Meta Rules Engine.

#### Select a suitable model

You need a model that outputs a score. You can quickly identify these by looking for the **Scores** tag in the model overview.

<figure><img src="/files/Sm27y9UA1hafK829YdtT" alt="Nx AI Cloud model listing showing a model with the Scores tag highlighted"><figcaption><p>Look for the Scores tag to identify models that output category scores</p></figcaption></figure>

Or check the model detail page: if the model outputs named scores, they appear in the output description.

<figure><img src="/files/UcJQG3AwVuSflSirvQxE" alt="Model detail page showing the output description listing named score values"><figcaption><p>Model detail — outputs listing confirms the model returns named scores</p></figcaption></figure>

#### Create an Event Rule in Nx Meta

In the Nx Meta Desktop client, open **Camera Rules** for the camera running the AI plugin.

<figure><img src="/files/JT3Ek1L6yNzwpPJyAo8v" alt="Nx Meta Desktop Client showing the Camera Rules option in the camera context menu"><figcaption><p>Open Camera Rules from the camera context menu</p></figcaption></figure>

Click **Add a New Rule**. See the [inference framerate how-to](/nx-ai-manager-v6.1.2/nx-ai-manager-plugin/howtos/show-ai-inference-framerate-on-video.md) for a step-by-step walkthrough of the rule editor interface.

#### Set the "When" Condition

**Source**: Select the camera device (usually pre-selected).

**Event**: Select **Analytics Event** with type **Category detected**.

#### Set the "Do" Action

**At**: Select the same camera as the source.

**Action**: Select **Show text overlay**.

**Text**: The default `$eventText` value contains the highest scoring category name. No custom text is needed.

<figure><img src="/files/2LlpBmTSazCHUZ8RgZgC" alt="Completed event rule showing Analytics Event - Category detected as the trigger and Show text overlay as the action"><figcaption><p>Completed rule — triggers on Category detected and shows the result as an overlay</p></figcaption></figure>

When the event fires, the highest scoring category is displayed on the video feed.

<figure><img src="/files/hCX9l3BMDlutztnNAQal" alt="Camera video feed showing the highest scoring category name as a text overlay"><figcaption><p>Highest scoring category displayed as a text overlay on the video feed</p></figcaption></figure>

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