assuming that I have an application which contains a tablechart with several dimensions, and an expression which contains an aggregation. the expression should always be aggregated by the dimension of the chart which is in the first position... so I can't use a fixed dimension but would need to know if a user moved e.g. dim2 to the first position... then the expression should be aggregated by dim2 instead of dim1... is there a way to get this information?
Thanks a lot in advance,
PS: I attached a little example.