> For the complete documentation index, see [llms.txt](https://docs.videc.de/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.videc.de/june5-3.7/en/webanwendung/sichten/messgroessenaustausch.md).

# Measured Variable Exchange

In all objects where measurements can be added, a measurement exchange can also take place. For example, charts, traffic light, value table, gauge, value display or tabular manual value entry.

## Prerequisite

For an exchange to take place, the corresponding object must already contain at least one measurement. Otherwise, no measurement exchange can occur.

## How the Measurement Exchange Works

First, select a measurement from the object list that you want to exchange with one from the current object.

Each measurement in the object list is provided with a corresponding auxiliary button on the right side. It can be identified by the symbol with the three dots. By pressing this button, a corresponding selection of options is displayed. These options also include the button "*Exchange with*".

When you click on this button, a selection of already selected measurements that are in the current object appears (directly below the button). Now select one of these measurements. The current object now performs a measurement exchange between the selected and the already selected measurement.

When a measurement is exchanged, all previously configured properties such as color, line color, marker, database, etc. are retained.

The following example illustrates a simple measurement exchange in a line chart:

### Example

Exchange *Measurement\_C* from the object list with *Measurement\_X* from the object.

| Object List:   | Current Object (e.g. Line Chart) contains: |
| -------------- | ------------------------------------------ |
|                |                                            |
| Measurement\_A | Measurement\_X                             |
| Measurement\_B | Measurement\_Y                             |
| Measurement\_C |                                            |
| Measurement\_D |                                            |

* Press the button with the three dots on Measurement\_C. Then press the button "*Exchange with*".
* A selection of already selected measurements (Measurement\_X and Measurement\_Y) appears. Finally, select Measurement\_X.


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