---
title: Resolving the Error: "Expression must evaluate to a node-set"
slug: resolving-the-error-expression-must-evaluate-to-a-node-set
docTags: 
createdAt: 2025-06-09T23:51:30.597Z
---

When Activate attempts to load a webform, you might encounter the error:

:::BlockQuote
Expression must evaluate to a node-set
:::

This typically indicates an issue with the structure or naming of elements within the webform.

## Possible Causes and Solutions

### Control Name Starts with a Number

Webform controls cannot have names that begin with a number. The solution is to rename the control so that it starts with a letter or valid character.