- TIBCO BusinessEvents®
- Standard
- Temporal
- History

# Temporal.History.howManyInLast()

## Signature

`int howManyInLast(PropertyAtom pa, long num_msec_ago)`

## Domain

ACTION, CONDITION, QUERY, BUI

## Description

This method returns how many history values exist for given property in last number of msec ago. The value is bounded by history size.

## Parameters

Name | Type | Description
--- | --- | ---
`pa` | `PropertyAtom` | The target property.
`num_msec_ago` | `long` | Number of msec ago.

## Returns

Type | Description
--- | ---
`int` | Number of history values that exist within the last specified msec timeframe.

## Cautions

none