Bit of a tricky one (for me anyway!). I'm driving an Inventor GA using iLogic, within this GA are various guard sub-assemblies..........(See example attached). I designed it so that if the material for the sub assemblies is changed then the sheet thickness is also changed (eg, if alu = 3mm sht, mld stl = 2mm). Look at the attached, the grey parts are, in reality, meshed. However i do not want to create the meshed profiles so can i override the density (x0.7) using iLogic. I could override the mass by adding (0.7 x mass) BUT this does not update if the geometry changes (also driven by the GA.