> For the complete documentation index, see [llms.txt](https://ashobot.gitbook.io/ultimate-attributes-pack/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ashobot.gitbook.io/ultimate-attributes-pack/validators.md). # Validators

Required

Displays an error helpbox above the variable if it's empty. **Supported property types** * String * Object Reference * Exposed Reference * Managed Reference **Parameters** * LogError Code Example

using UltimateAttributesPack;

public class RequiredExample : MonoBehaviour
    {
        // Required attribute displays an helpbox in inspector if the variable is null
        [Required]
        public GameObject exampleObject;

        // You can also set the param to true to log an error in the console if the variable is null
        [Required(true)]
        public GameObject secondExampleObject;
    }

MinValue

Clamps the variable to a minimum value. **Supported property types** * Float * Int **Parameters** * MinValue Code Example ```csharp using UltimateAttributesPack; public class MinValueExample : MonoBehaviour { // MinValue attribute clamp the variable to a minimum [MinValue(0)] public int intValue; // It also works with floats [MinValue(2.5f)] public float floatValue = 2.5f; } ```

MaxValue

Clamps the variable to a maximum value. **Supported property types** * Float * Int **Parameters** * MaxValue Code Example

using UltimateAttributesPack;

public class MaxValueExample : MonoBehaviour
    {
        // MaxValue attribute clamp the variable to a maximum
        [MaxValue(5)]
        public int intValue;

        // It also works with floats
        [MaxValue(2.5f)]
        public float floatValue;
    }

***