STARTING WITH RULES

I’m quite new with this software (OPENREMOTE) and I’m triyng to figure out how to implement a simple rule on my controller

I receive from a weather station the wind velocity in m/s and I would like to show it in Km/H on my controller.

Could someone explain to me how to write the rule

Thanks

Here is an old post showing how to convert temperature with a rule http://mqlservice.net/openremote/2013/05/22/temperature-sensors-calibration/