You should keep in mind that the MAC OS build can be used to create setup packages only for Java applications (i.e. using the Java Products page from Advanced Installer). You cannot use it to install regular files on MAC computers, as you would do on Windows machines.
Thank you Mihai for your help. I appreciate. One last questions about this. What software would you recommend to create an installer that would copy some files to the Mac. I guess that I could also supply the files in a compress archive and the users will have to decompress the files in the good folder of their Mac.