---
title: "May 10, 2024"
slug: "may-10-2024"
updated: 2024-10-25T12:16:45Z
published: 2024-10-25T12:16:45Z
canonical: "learn.servitly.com/may-10-2024"
excludeFromSearch: true
---

> ## Documentation Index
> Fetch the complete documentation index at: https://learn.servitly.com/llms.txt
> Use this file to discover all available pages before exploring further.

# May 10, 2024

## New Period Field widget

A new version of the [Period Field](/docs/period-field-v2) has been released, and now DPS users can select periods in a more simple way, and also moving the selected period forward and backward.

![](https://cdn.document360.io/6759e9c9-3ce3-49df-965a-7231d2d9a10a/Images/Documentation/image(421).png)

By clicking on the period button, a popup allows you selecting a period from a predefined set or instead specify a custom one through the calendar. Optionally, the time of day can also be specified for more accurate data analysis.

![](https://cdn.document360.io/6759e9c9-3ce3-49df-965a-7231d2d9a10a/Images/Documentation/image(422).png)

The old period field remains available, and will be gradually replaced with the new one, also when embedded into widgets (e.g. *Time Series Chart*).

## Derivation with previous metric value

When configuring a [*Derived Metric*](/docs/derived-metrics) with continuous computation, for each selected input metric, within the expressions, you can also use the previous value in order to compute differences on metric values.

![](https://cdn.document360.io/6759e9c9-3ce3-49df-965a-7231d2d9a10a/Images/Documentation/image(423).png)

This derivation is helpful, for instance, when you have a metric publishing an absolute counter, and you need to track increments.

## Bug fixes (DPS)

- The *Maintenance Registry* widget displayed the wrong name of the thing when placed in a location context.
- It was not possible to change the parent thing within the *Map* widget.