query regarding query

Hi All,

I am developing infoset in query using sq02.

There i have added one additional field 'gross value' and table as vbak.This gross value is nothing but the total of total value of each material in each line item of sales order after adding taxes.

I need total amount by adding of all these total values of all line items.

Can you please tell me how can i achieve this.

Regards,

Ashutosh