> For the complete documentation index, see [llms.txt](https://community.threekit.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://community.threekit.com/platform-documentation/catalog-2.0-docs/project-data/logic/conditions.md).

# Conditions

Conditions are available inside both PartReference attributes, as well as Rules.

PartReference attribute conditions serve as a tag-filter. They are available as both explicit AND (&) or as implicit ALSO.

<figure><img src="/files/BoDUZXUZkTLEgiP0YTOY" alt=""><figcaption></figcaption></figure>

Rule Conditions are only available as a direct comparison of value.

**All listed conditions inside a rule must be met, for the actions to execute.**

The only event trigger available in the UI is for an attribute having changed its value.

There is currently no way to compound multiple conditions with OR, or combinations of OR and AND. ELSE and ELSE IF are not currently available either.

The available conditions are context-sensitive, depending on the type of attribute being used for comparison.

### Conditions List

1. **Attribute has changed** - event triggered when the attribute’s value has changed, typically by the front end user
2. Attribute **is any of / is none of** listed values (applicable only to  Item or Asset types)
3. Attribute’s Item or Asset has the given **metadata key=value** pairs (applicable only to  Item or Asset types)
4. Attribute **= or !=** listed value (applicable only to  Number, String, Boolean, and Color types)
5. Number Attribute **>, >=, <, <=** listed value
6. String Attribute Value **Includes or Doesn’t Include** listed String
7. **Layer** - Check if Listed Layer Name inside the Listed Composite Asset is currently being rendered


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