[otrs] TicketStorageModule

hi, i would like to activate the Self->{TicketStorageModule} = 'Kernel::System::Ticket::ArticleStoragefs'; this activated correctly but when i try it out, it just creates a folder with year - month - day , but no files.. so in the manual it claims : Contra: Your webserver user should be the otrs user (file system permissions!). how can i edit this functions in a windows environment? is this just chmod the var/article folder or...? thanks!