No, that’s not how sendHttpGetRequest works. You can’t just append a transformation to the URL. That’s an HTTP Binding configuration. sendHttpGetRequest doesn’t use the HTTP binding. It can only accept a URL as the first argument. You have to apply the transform after you get the results.
val response = sendHttpGetRequest("http://ip_speaker:55001/UIC?cmd=%3Cname%3EGetMuse%3C/name%3E", 5000)
val mute = transform("XPATH", "/UIC/response/mute", response)
Make sure Xpath transformation add-on is installed.