Hi, I would like to know if it is possible to refer to a grouping within a matrix from another matrix. eg. TopMatrix has grouping Industry (Education Â£10, Pubs Â£20) BottomMatrix has the same grouping I am trying to do the following calculation in BottomMatrix(simplified) =Sum(Fields!GroupValue.Value) / Sum(Fields!GroupValue.Value, "TopMatrix") The problem is that it divides by the total of all the groups (in this case Â£30) instead of each group. So I get Education / Â£30 and Pubs / Â£30 instead of Education / Â£10 and Pubs / Â£20. I dont seem to be able to scope the grouping in TopMatrix, only TopMatrix itself. Would be nice to be able to scope something like TopMatrix.Industry Any ideas?