When I create a Event with repeat (Every day) the repetition is not in the FileMaker database. Only the original Event is in the Database.

That's right. Zulu does not support repeats created in iCal. If your FileMaker solution creates repeating events as distinct records (one record per repeat) then iCal will see these (SeedCode Calendar does this).

More on this here: http://www.seedcode.com/pmwiki/pmwiki.p ... tingEvents

Other limitations of Zulu are here: http://www.seedcode.com/pmwiki/pmwiki.p ... imitations