> For the complete documentation index, see [llms.txt](https://docs.world-creator.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.world-creator.com/reference/terrain/effects/operation.md).

# Operation

## Overview

The Operation effect allows you to effect a distribution's result based on a logical condition.

## Parameters

<table><thead><tr><th width="199.7999267578125">Properties</th><th>Description</th></tr></thead><tbody><tr><td><strong>Condition</strong></td><td>Allows you to select a condition like <strong>always, less than</strong> or <strong>greater than</strong>.</td></tr><tr><td><strong>Condition Value</strong></td><td>The value against which the condition will be compared to.</td></tr><tr><td><strong>Fill</strong></td><td>The value that will be put in if the condition is met.</td></tr><tr><td><strong>Operation</strong></td><td>The operation that will be applied to the condition.</td></tr></tbody></table>

## Results

<div><figure><img src="/files/VALaber9o9kHoCVZxmRc" alt=""><figcaption></figcaption></figure> <figure><img src="/files/CFRz3CLc4Uq6JKOXkfNN" alt=""><figcaption></figcaption></figure></div>


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