Just an update I've had a small win with the Swql, I'm able to filter by a custom property now on the world map, one of the issues was the documentation I was reading was saying that I needed to use node.xxxxx, when it actually needed nodes.xxxxxxx. This needs to be updated or should be clearer in the documentation. Maybe a lab on worldwide maps could help?
If possible is there anyone out there that can let me know if you can add more than one custom property to the map filter. And what the correct syntax needs to be In order for the query to work. If i can see what the syntax format needs to be then I can work out the rest.