It's not missing; it's just spelled differently.got it working , but i noticed its missing the 1st input when adding to cmdr's log , i have hydrogen fuels , but when i add to cmdrs log , its missing ,, everything else seems to be ok ,
also in cmdr's log folder im getting extra system_data files file names with loads on letters and numbers after it system_data_e5056088412a4c068f9a31207905674f
but thank you for all your help so far
That long named file is your original system_data.txt. If you find you don't like the results after running the script, just delete the current system_data.txt and rename that file to system_data.txt and it'll be like the script was never run. This ensures you'll never be in danger of losing all your hard work.