Well, I'll be more specific. I attach a zip file showing a minimal example of what I achieved so far and its output (labelled "Works") and what I actually want, but does not work (labelled "Doesnotwork"). I've tried different commands and combinations, all of them useless. As a side note, I'm porting some TikZ functions. Although it is not recommended in ConTeXt, some of them are really necessary to me.