Thanks for your solution, i am trying to learn, i don't really understand code that well, i just look for key words, eg "xmitdatascaler" is how much data to transmit, "sciencebase" and "sciencecap" is to do with how much of the total amount of science you collect on each trip, it i just couldn't find the value for "surface sample", or write a code like you have to change it thanks again