Problem with calclated field(column) in castom list Formula error

From: Zen I (zenoniwanicki_at_yahoo.com)
Date: 06/23/04 

Date: Wed, 23 Jun 2004 18:46:42 +0200

Hi everybody,

I'm using Windows 2003 Standard edition(Polish language version) and WSS
2.0 (Polish language version).

I've tried to build very simplistic custom list with where I've got 2 fields

"Date1" (date Time type),

"Date2" (date time type)

And then I try to ad third field - calculated field named f.example "Diff"
(integer type)

To fill this calculated field I've used this formula with DATEDIF function

[=DATEDIF(Date1,Date2,"D")]

And after I click ok , I'm getting an error saying that syntax is wrong or
I'm using unsupported function.

Any suggestions why this formula is wrong (if it is wrong.??)

Zeno