On Mon, 22 Mar 2021, Iago Varela wrote: > It wouldn't, because {Dataset} would be a bunch of series, which > aren't defined until the dataset is loaded. > > But thanks to Jack I think I've got to a solution [...] Here's another idea you could try: ask for the list of variables as a string, as in vars_to_use = "y x1 x2" Then you can use string substitution to create your list after the dataset is open: list L = @vars_to_use