thanks, Rebecca for your reply.

i forgot to add that F1,F2 is actualy an example.

my need it to have a summery of a group of fields, thus F1,F2....Fn.

i have created a group (via document properties) and add all the fields i need (52)

and tried to sum(GroupName), or sum $(GroupName) or sum(<GroupName>)

but no luck.

can you assist?

moti