I'm trying to control the mass attribute of a vellum hair strand via a very simple neighbor based 'infection' effect where the mass value of 1 belonging to points in a group are propagated over time across their neighbors. Although the vellum solver should be able to handle this via a simple geometry wrangle inside it, it just refused to do it in contrast to a regular sop solver node


I'm quite literally stuck and out of ideas at this point. Any help would again be highly appreciated.
Cheers;
AJ