(/ TotalFieldAreaFromSS1 TotalFieldAreaFromSS2)
(/ TotalArea1 TotalArea2)
and(* (/ TotalArea1 TotalArea2) 100)
(foo SS1 SS2 fmt1 fmt2)
(list TotalAreaSS1_fmt1 TotalAreaSS2_fmt1 RelFactor_fmt2)
%<\AcExpr ((%<\_FldPtr 2140757529952>%+%<\_FldPtr 2140757529152>%+%<\_FldPtr 2140757530176>%)/(%<\_FldPtr 2140757530336>%+%<\_FldPtr 2140757529440>%+%<\_FldPtr 2140757531264>%))>%
((AreaField1 + AreaField2 + AreaField3 + ...) / (AreaField1 + AreaField2 + AreaField3 + ...))
or(TotalAreaFieldExpr / TotalAreaFieldExpr)
it would work.(/ (+ a1 a2 a3 ...) (+ a1 a2 a3 ...))
Glad you got it sorted. :)