[Gretl-users] Updating variables

Is there any way to update variables that are functions of another, if the original variable Y has been amended or updated . The former is straightforward to edit Y's values. But I am not clear that for example, l-Y is automatically recalculated. And if l-Y has already been used in a session, Gretl will not let it be deleted giving the error message cannot be deleted variable in use.. Suggestions around this issue welcomed Brian J Revell Professor Emeritus Agricultural and Food Economics Harper Adams University Newport Shropshire TF10 8NB Tel 01952 815237 Tel: +44 1952 728153 Mbl +44 7976 538712 University: +44 1952 815235 alt: email: bjrevell(a)harper-adams.ac.uk