Keeping the WebRFC URL dynamic in Personas

I'm not sure if this is common knowledge so I thought I'd mention it

In order to avoid a hard coded server name when performing a WebRFC, there is a very simple way to build the URL in a dynamic fashion. Just precede the WebRFC step with a Javascript step which builds a variable from the current protocol and host name and use that in the WebRFC step. So something like this:

Calculate in JavaScript     args.server = location.protocol + '//' + location.host;

Call WebRFC                        {server}/sap/bc/webrfc?_FUNCTION=functionnname...etc...

This avoids having to alter the flavor when it gets transported to another environment like from Dev to QA and so on.