Hi again, now I cannot solve this simple problem. Is it possible to open data files with "open" or create a text file with "outfile" using an already defined string with path and file name? Something like string pf = "c:/path/file.ext" open pf outfile pf (this does not seem to work) Thanks in advance, Matteo -- Matteo Pelagatti Dipartimento di Economia, Metodo Quantitativi e Stretegie di Impresa Università degli Studi di Milano-Bicocca Via Bicocca degli Arcimboldi, 8 20126 Milano Tel +39 02 6448.5834 http://www.statistica.unimib.it/utenti/p_matteo/