ginkoba,
Only question I have surrounds "currentfieldvalue". In general terms, I have always seen the field name itself used in formula's and am unfamiliar with this expression. Assuming you have some Date or DateTime field, the above should work. If you change "currentfieldvalue" to the actual field name (in your original formula/post... ignore my first reply entirely, as I had misread your questions) do you obtain the sought results?
Your formula should be as you originally posted, but with the >= switched to <=. My apologies for the confusion caused by my first reply.
Cheers!
Mike
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"To be alive is to revel in the moments, in the sunrise and the sunset, in the sudden and brief episodes of love and adventure,
in the hours of companionship. It is, most of all, to never be paralyzed by your fears of a future that no one can foretell."