[itsm] Import/Export from batch

Hi, I am currently using OTRS 2.2.7 with ITSM 1.1.2 . I am trying to do import / export of my hardware inventory. I have done some template witch are working fine, but now I am trying to use them from script, in order to have weekly/daily status of Use/Spare computers. I tryed to use directly the package "Kernel::System::ImportExport" from the file "ImportExport.pm", but with no success so far, some global param seems to be initiate ($Self? ). Could you please help me to scheduled export ? (If it can be scheduled from the web interface it would be perfect, but I haven't see this kind of option.) Sylvain Floury Nec-Computers SAS