# Value is invalid

![](https://476758574-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FVctm8W2AAd8SbIYUaj27%2Fuploads%2F5zJGJdgDKNx0FyRDtrmh%2Fimage.png?alt=media\&token=573ae4b0-b8ac-4332-83dc-12b98e55c291)

{% tabs %}
{% tab title="Entry Vars" %}
**Variable to validate :** The variable or value to be validated must be entered. This means that if a value is not entered or the variable is empty or with a negation value such as: false , null , 0 .

**Step by Step :**

<figure><img src="https://476758574-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FVctm8W2AAd8SbIYUaj27%2Fuploads%2F2ZM98AfH7SbsYAUdibVS%2FValue%20is%20invalid.gif?alt=media&#x26;token=1c780dbf-2e8e-4cd6-b26b-3b3754fb8943" alt=""><figcaption></figcaption></figure>
{% endtab %}

{% tab title="Callbacks & Outvar" %}
**Is a valid value :** It is executed when the property or the value entered is a valid character value.

OutVars&#x20;

`Null`

**Is an invalid value :** It is executed when the property or the value entered is an invalid character value.

OutVars&#x20;

`Null`
{% endtab %}

{% tab title="Features" %}

{% endtab %}

{% tab title="examples" %}

{% endtab %}
{% endtabs %}