In article ,
V.P.Smruj wrote:

Is it possible, that my Excel 2007 doesn't know SUMPRODUCT ?
Thans
V.P.Smruj

You shouldn't have a problem with it at all. Are you getting an error
value? If so, which one? If not, can you specify exactly what's
happening.

Note that in your original post your formula used a semi-colon instead
of a comma as a separator, so I used a semi-colon as a separator too.
Does your version of Excel in fact use semi-colons as a separator?