mark When was Run_Number inserted in Topas? We are tying to use #list to run refinements using multiple space groups but the logic is based on Run_Number and we receive an error saying Run_Number is not initialized.
johnsoevans It was in version 6, but I don't remember if it was in the very earliest versions. There's a file you could try at: https://topas.webspace.durham.ac.uk/tutorial_multitopas/. This would let you test if you have the correct syntax in your #list.