Mass_Temperature for fix mesh/surface

Hi,
I am trying to simulate a cold hollow sphere mesh surrounded by hot particles. I am using the mass_temperature tag for this, but when I dump the mesh temperature, it doesn't change with time even though the surrounding particles are at a higher temperature than the mesh. Does anyone have any idea if this feature works in LIGGGHTS?

syntax used:

fix cad2 all mesh/surface file Indium226mm.stl type 2 move 0 0 0.007 temperature 300 mass_temperature 0.35

dump meshtemp all mesh/vtk 500 temp*.vtk temp cad2

Thanks!