How group/ungroup with a condition?

[daraii]

I would like to know if it is posible to group/ungroup a group with a condition. For example, if I have the the table x with the fields account, zone, gr_flag and amount. I have Group 1 that is grouped by x.zone. I would like to be able, based on the x.gr_flag, to "activate" the group when the flag is equal to 1 and to show the detail when the flag is equal to 0.

I have tried using the "Suppress" option in the group sections but the data only seems to be detailed but the grouping still occurs.

[jawadhashmi]

yes you can create the group on the formula field and your formula field will define which field to be grouped.