Taking moment from a point off a 3D beam

P.S. Just by the way I am looking for things to come out somewhere near Bending moment Mz = -1728.174038:

Finding the moment of a cantilever beam from its lengthwise cross section - General - FEniCS Project

So far I was able to get some scalar type values from facets but they didn’t yet amount to the whole moment at the free end…