[NTG-context] 2SIDE-arranging + doublesided

Hi all, please have a look at my example. \setuppapersize[A5][A4,landscape] \setuplayout[location=middle] \setuppagenumbering[alternative=doublesided] \setuparranging[2SIDE] \defineoverlay[right][{\scale[width=\textwidth]{right page}}] \defineoverlay[left] [{\scale[width=\textwidth]{left page}}] \setupbackgrounds[rightpage][background=right] \setupbackgrounds[leftpage] [background=left] \starttext \showframe[text] \dorecurse{5}{test\page} \stoptext Is there a way to push the right pages on the right and the left on the left? I tried to add a blank page at the beginning but then also a second page is added and the problem remains. I appreciate any help Andreas