My formula doesn't produce an error, but it doesn't work either! Can someone
help?

DateFrom is the name I've applied to cell N9.

In cell G23 I want to show DateForm - 7 working days, so I've entered this
formula in the cell:
=IF(DateFrom<"",WORKDAY(DateFrom,-7),"")

Can someome tell me what's is wrong with this syntax? (Analysis Toolpack is
installed.)

Many thanks!