---
title: How to create a validation for the Multi-Select field in forms?
description: OFS Flow Forms and Multi-Select Fields support Field Validation, but there is a little extra complexity when validating a Multi-Select Field.
---
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# How to create a validation for the Multi-Select field in forms?
## OFS Flow Forms and Multi-Select Fields support Field Validation, but there is a little extra complexity when validating a Multi-Select Field.
When using the Alerts module in **Fusion Manager** to create field validation for a multi-select field, your validation rules need to reference the **Unique Field Name** for each Multi-Select option.
Unique Field Names can't be dragged and dropped via the usual interface, so type the field names directly into your validation formulas.
In this example, there are three multi-select options — Yoda, Luke Skywalker, and Gandalf:
Within a validation formula, each value can be referenced as:
```
data["Unique Field Name"]
```
Where "Unique Field Name" matches your specific option, per this example:
```
data["Yoda"] == "no" || data["Luke Skywalker"] == "no" || data["Gandalf"] == "yes"
```
These can be built into validation rules as shown below:
The rule above invalidates a response when the operator has ticked Gandalf, or left Yoda or Luke Skywalker unticked.
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