1. **What is Option Value Change?**
* Players can change the values of their Gear's **Additional Options** using the **Option Value Change** feature.
* To change the Option Value, players must spend [OptionMod Kits](/game-system/currency/optionmod-kits.md) and [Gold](/game-system/currency/gold.md).
2. **Locking Additional Option Values**
* Players can **lock** the Additional Option Values they want to keep.
* Locking an Additional Option Value increases the required **OptionMod Kits** and **Gold** exponentially for each value locked.
3. **Upgrade Option Feature**
* Players can use the **Upgrade Option** feature once their Gear reaches **Legendary Grade** and they have the required **Upgrade Option Kits**.
* The **Upgrade Option** feature allows players to upgrade the Additional Option Value to **S+**.
4. **Additional Grade Tiers**
* **S+**
* **S**
* **A**
* **B**
* **C**
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