Publish MQTT raw bytearray

Setup, Configuration and Use Scripts & Rules
9

Can I set a charset in this script?

var testinput = '\u00C0\u0069\u0002\u0052\u009C\u0065'
val mqttActions = getActions("mqtt", "mqtt:broker:323e452a3a")
mqttActions.publishMQTT("debug/nibe",testinput )

Is there a function like the Java String using a specified charset that work in a dsl script?
String(byte[] bytes, Charset charset) with Charset.forName("ISO-8859-1")