Alpha Group with two letters / UPnP search?

[jacobacci]

Thanks, Simon
understood.
I am using Volumio as UPnP Control Point. When I open a list, there is a search field at the top of the page



When I enter a search term, nothing happens, I get an empty result. AFAIK there is a search functionality between a control point and a server. Or am I mistaken here?
https://www.openhab.org/addons/bindings/upnpcontrol/ describes a search function