Thank you Chris for all the useful informations you give US I really appreciate all the TIPS and TRICKS on Guide Everything about : GUIDE + EXCEL+ ODS will be useful That is : GUIDE and ODS TAGSETS How to put information in an Excel Cell in an existing sheet with GUIDE How to change excel input file names or excel export files in a project without too much work 2 Parallel processing in Guide with a node waiting for good execution of these two parallel treatement to pursue thank you in advance Hugues GERARD from PARIS_France