Ok that's good! But if if I'm not mistaken by means of tracefield you can only select the input by a list of choices. I should isert in the header, for example, the batch number that, obviously, change everytime I have a new piece. Therefore, through a comment (that I can eventually transform into a variable) I collect the batch number. It could be done this thing by means of a tracefield?
Yes. In my example, I am using FORM data for my tracefields. So for instance, if C1 is operator name, then where I have FORM1, just enter C1.INPUT. As long as you have =TRACEFIELD(1) in the FILE_HEADER, whatever C1 equals, that tracefield will equal.
