---
title: "TYPO3 Exception 1255072832"
manual: "TYPO3 Exceptions"
version: "main"
permalink: "https://docs.typo3.org/permalink/t3exceptions:typo3-exception-1255072832"
source: "Exceptions/1255072832.rst"
rendered: "2026-09-24T13:19:33+00:00"
---

# TYPO3 Exception 1255072832 {#typo3-exception-1255072832}

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> Also check out
> [our tip on Coding Style and reST](https://docs.typo3.org/permalink/t3exceptions:tip-about-rest-coding-style).

## The form field "\[items\]\[\]\[\]" is invalid. {#the-form-field-items-is-invalid}

**The form field "\[items\]\[\]\[\]" is invalid. Reason: "\[\]" used not as last
argument, but somewhere in the middle (like foo\[\]\[bar\]).**

The value of "**name**" is missing in the form field.

For example at the selecting field:

```
<f:form.select '''name="paymentOptions"''' options="{payPal: 'PayPal International Services', visa: 'VISA Card'}" value="visa" />

```

The error also occurs having a Fluid template like

```
<f:for each="{collection}" as="item" key="key">
  <f:form.checkbox name="items[]"  value="{key}"  />
  <label for="item-{key}">{item.name}</label>
</f:for>

```

When you select a checkbox and submit the from, you will receive the
error message.

**Solution:** Adding a counter/id in the brackets of the name attribute
solves the problem:

```
<f:form.checkbox name="items[{key}]"  value="{key}"  />.

```

Since in the form.checkbox documentation the examples are given with
empty brackets, I consider this a bug.1

**Better solution (since TYPO3 7):** Do not add yourself \[\] to the
name of the checkbox. Simply add multiple="1" and Fluid will adds
automatically the \[\] to all the checkbox of the group.

```
<f:for each="{collection}" as="item" key="key">
  <f:form.checkbox name="items" multiple="1"  value="{key}"  />
  <label for="item-{key}">{item.name}</label>
</f:for>
```