[NTG-context] using symbols in MetaFun

Hello, I have a "conversion" defined in the following way: \usesymbols[jmn] \defineconversion [gnuplot] [$\bullet$, $\circ$, $\star$, x, {\symbol[navigation 1][NextJump]}] I would like to use these symbols in a macro draw_symbol(x,y,number) so that draw_symbol(0,0,3) would draw a star in the origin. The problem is that I don't know: - how to use symbol sets inside MetaFun (verbatimtex \usesymbols[jmn] etex doesn't work here) - how to enable label(btex \convertnumber{gnuplot}{5} etex, (x,y)) to work properly in metafun (no luck with verbatimtex ... etex again) Any hints would be appreciated. Thanks, Mojca