- TIBCO BusinessEvents®
- Standard
- Engine

# Engine.invokeRuleFunction()

## Signature

`Object invokeRuleFunction(String uri, Object[] arguments)`

## Domain

ACTION, BUI

## Description

Invoke a rule function by name.

## Parameters

Name | Type | Description
--- | --- | ---
`uri` | `String` | The URI of the rule function to invoke.
`arguments` | `Object[]` | Array elements must be in the same order as the arguments are declared by the rule function.

## Returns

Type | Description
--- | ---
`Object` | The result if any. Will be null if function returns void.

## Cautions

none