[NTG-context] Layers on simpleslides

Hi, I'm trying to insert a simple logo on a simpleslides slide, but for some reason it doesn't appear: \usemodule[simpleslides] \definelayer[mybg] [x=0mm, y=0mm, width=\paperwidth, height=\paperheight] \setlayer[mybg] [hoffset=1cm, voffset=1cm] {\framed[frame=on, width=3cm, height=2cm]{LAYER}} \setupbackgrounds[page][background=mybg] \starttext \SlideTitle{Bla} Bla \stoptext Any ideas? Regards, Vedran Miletić