# isValid

> Allows you to enable and disable the wizard create button, so that the user can not click it.

## Definition

* **Type:** Property
* **Namespace:** [UnityEditor](/engine/6000.5/script-reference/unityeditor.md)
* **Assembly:** UnityEditor.CoreModule

```csharp
public bool isValid { get; set; }
```

### Remarks

Additional Resources: [ScriptableWizard.OnWizardUpdate()](/engine/6000.5/script-reference/unityeditor/scriptablewizard/onwizardupdate.md)

![isValidScriptableWizard (isValid)](/api/media?file=/engine/6000.5/media/images/isValidScriptableWizard.png)

*The finish button gets disabled until the user sets the number to 5.*

### Examples

```csharp
// Asks the user to set the var "Number" to 5, if is not set to 5
// the "Finish" button will not be reachable

using UnityEngine;
using UnityEditor;

public class isValidScriptableWizard : ScriptableWizard
{
    public int number = 0;
    [MenuItem("Example/Show isValid Usage")]
    static void CreateWindow()
    {
        ScriptableWizard.DisplayWizard(
            "isValid boolean example",
            typeof(isValidScriptableWizard),
            "Finish");
    }

    void OnWizardUpdate()
    {
        helpString = "Set The number to 5 and press finish";
        if (number != 5)
        {
            errorString = "The number has to be set to 5!";
            isValid = false;
        }
        else
        {
            errorString = "";
            isValid = true;
        }
    }
}
```