[dev] Forcing the replacement of files in .sopm packages

Hello everyone, I'm currently trying to build a .opm package that has some otrs files but modified. This is my *.opm package should have a newer version of Kernel/System/Ticket.pm, but when i build the package and try to install it, OTRS gaves me an error because there is another package that already uses that file. I've been checking the source of Kernel/Modules/Installer.pm and i have seen that there's an Force option, but i still have no idea on how this parameter is suposed to be passed to the function. Any ideas suggest??? Thanks a lot