How exactly is the Get Triangles in Polygroup meant to be used?

i recently got into dynamic meshes and try to recreate the modelling tools for runtime purposes.

now the meantioned node is supposed to return a list of all triangles in the given polygroup but it only returns the target mesh with no changes made.


Am i supposed to code this method myself in c++ or what?

I created the cpp code for this to work properly

guess you have to do it in c++ yourself