> For the complete documentation index, see [llms.txt](https://manual.blocworx.com/blocworx-documentation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://manual.blocworx.com/blocworx-documentation/bloc-editor/managing-a-field/field-rules/must-be-exactly-x-number-of-characters.md).

# Must be exactly X number of characters

This rule is used to determine the character length, the rule fails if the character length is not equal to the required amount set.

![](/files/-Ma4L6-QO2SIXLR7U-TR)

### Rule Parameters

| Parameter            | Description                                                                                              |
| -------------------- | -------------------------------------------------------------------------------------------------------- |
| Number of Characters | The number of characters it must equal, this must be a numeric value for the rule to function correctly. |