[NTG-context] Multi-line headers

I need a multi-line header in the right page corner, with content right-aligned. \setupheadertexts[nothing on left][line 1 \par line 2] doesn't work. Is using a \vbox the correct method of handling this? If so, how? \setupheadertexts[nothing on left][\vbox{line 1 \blank line 2] puts the header in the left corner. -- david