> For the complete documentation index, see [llms.txt](https://motiongamesstudio.gitbook.io/magic-lightmap-switcher/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://motiongamesstudio.gitbook.io/magic-lightmap-switcher/using/tracking-object-parameters.md).

# Tracking Object Parameters

If you do not use presets, then you must manually mark the objects that MLS will track in order to perform interpolation between the saved data. A special overlay, **MLS Tracker**, is used to mark objects. The overlay menu opens differently in different versions of the engine. 

You need to select MLS Tracker in this menu. After that, the MLS Tracker window will appear in the Scene window.

<figure><img src="/files/Rg6kl2DG6wYlHLP6X4xi" alt=""><figcaption></figcaption></figure>

MLS can track almost any scene parameters that can affect lighting and can be interpolated and more. Any custom scripts can also be tracked.

When an object is tracked by MLS, all its fields and properties can be interpolated between saved scene data.

When MLS tracks a component, a special component is added to the object (Game Object) - the MLS Tracked Object marker.

<figure><img src="/files/nXNxunuzui3Ra1jSsKmW" alt=""><figcaption></figcaption></figure>

| Option             | Description                                                                                                                                            |
| ------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------ |
| GUID               | The unique identifier of the object. It is used for stable serialization/deserialization of related data.                                              |
| Tracked Components | List of tracked object components.                                                                                                                     |
| Is Blendable       | If checked, the fields and properties of Tracked Components will be interpolated/switched during blending/switching of the lightmap.                   |
| Force Blend        | If checked, all components of the object will be interpolated/switched forcibly, without taking into account the internal optimizations of the system. |