Max of Date not working correctly in BO 4.0 WEBi

Dear All,

I am facing problem in getting max (date_field) in BO 4.0 WEBi

The requirement is as below:

Col A     Col B     Date Col

A          123         08/12/2013

A          456         08/15/2013

A          789         08/08/2013

Expected output after max(date)

Col A     Col B     Date Col

A          123         08/15/2013

A          456         08/15/2013

A          789         08/15/2013

Please note that the Date is of shar type coming from BEx. I have tried below formulas & it doesn;t seem to be working.

1. Max (date_field)

2. Max(todate(date_field;"mm/dd/yyyy"))

3. Max(todate(date_field;"mm/dd/yyyy")) foreach [col A]

Both are not giving me the desired output.

Any help would be appreciated.

Thanks,

Pavan