[NTG-context] new layer for letter

Hello, How can I create a new layer with the letter module? I've tried this, but it does not work: --8<---------------cut here---------------start------------->8--- \usemodule[letter] \defineletterlayer[test] \defineletterelement[layer][test][default]{NEW LAYER} \setupletterlayer[test][alternative=default, x=3cm, y=3cm, state=start] \startletter Where is the \quote{NEW LAYER}? \stopletter --8<---------------cut here---------------end--------------->8--- TIA for any hints! -- Peter