[basex-talk] Dynamic path segment for websockets

Dear all, so I just found out that it is not possible to create websockets bound to dynamic paths. If I try a websocket connection to declare   %ws:connect('/notification/subject/{$subject}') function log:subject() {}; I get an error (without significant logs). Whereas declare   %ws:connect('/notification/subject/one') function log:subject() {}; works well. Does this have a motivation? Is there another way of meeting the requirement of having dynamic websocket channels? Thanks in advance, Marco.