BEx Hierarchy and assigning value to parent

Hi All,

I am working on a problem where I want to display some information at parent node derived from child node.

I have a product hierarchy which has levels as Product -> Brand -> SubBrand -> SKU. A creation date is maintained at SKU level only. So when a hierarchy object and creation date are pulled in webi report. The output appears as below.

I want  to come up with an output given below.

I tried using max([creation date];[Product].children) but this didnt work. Any idea or thoughts to get this output?

Regards,

Girish Oak