I am also having problems with this.. Maybe I am just misunderstanding something? I have the latest install. product code 1222 gets matrix option code default of eg 1200000-4 1200000-5 Also trying to add a matrix option is a little bit sticky, often I have to check the boxes and hit submit a few times. Having struggled to edit fluidly I haven't got as far as checking if calculations are correct once I add lots of data.