Hi, I have a model where the desired outcome is to show the effectiveness of a window film on the thermal solar gains in a building, however I cannot quite figure out how to make a construction set which can be modelled. Is there a way to do this? I want to madel the performance of the glass (reflectance, emissivity, transmittance etc) and then place behind it a film layer with its own individual properties for emissivity, reflection and transmission of light and heat. I have been considering exporting the window construction as an .idf file out of WINDOW7.2, but am unsure if I would be able to properly import it into the Openstudio model. Any suggestions would be warmly welcomed, cheers