Hello Everyone,
This blog post shows you how to use the recently open-sourced FetchExchangeRate plugin.
In the cash desk you can maintain exchange rates between the different currencies. This plugin makes it easy to automatically update those values based on online data.
Demonstration

First set up the desired synchronised currencies in the Configuration/Currencies/Exchange Rates screen. If you don't want a currency to be synchronised by the plugin, set it to inactive.

Under the Configuration/Plug-ins screen you can specify offsets to each of the currencies in case you always want to offset the queried value by a constant value.
Finally press the One-time execution button under the plugins section of the FetchExchangeRatePlugin in the Configuration/Jobs screen.
Now you can see and use the updated exchange rates.

How to install
After that place the FetchExchangeRatePlugin-1.0.jar into the cco/POSPlugins/AP folder of the cash desk.
Finally start the cash desk.
Credits
The plugin works out of the box with the provided example Exchange Rate API. Credits Rates By Exchange Rate API
Feel free to comment and give feedback about the blog.