[chuck-dev] stereo ugens?

Hi chuck-dev, Is there a way to code stereo (or multi-channel) ugens in the chuck source? I want to write an own ugen and already found out how to do it, but I can't get the stereo output working. How should I write an ugen which has 0 inputs and 2 output channels? Or is the stereo feature not ready yet and I better stick to mono? Imre