SSRS 2008R2 : Not able to use Previous aggregrate function in matrix columns cell

Question

Hi Expert,
I have used a matrix tablix in my report. It is working fine. But when I am trying to use Previous aggregrate in one matrix column cell I get the below error:
The use of previous aggregrate function ia a tablix cell with in 'Tablix1' is not supported.
Please help me regarding that.
Thanks Rana

Answer 1

Hi Rana,
In your scenario, you use previous function in the “Data” cell, right? Previous function cannot be used in the overlapping parts of row group and column group. One workaround of this issue is use custom code to get the previous value.
Public Shared previous as Integer
Public Shared current as Integer
  Public Shared Function GetCurrent(Item as Integer) as Integer
     previous=current
     current=Item
     return current
  End Function
  Public Shared Function GetPrevious()
     return previous
  End Function
Then you can use the expression below in the “Data” cell to get the previous value:
=Code.GetCurrent(fields!Score.Value) & "-Previous-" & iif(Code.GetPrevious()=0,"",Code.GetPrevious())
If you have any questions, please feel free to ask.
Regards,
Charlie Liao
TechNet Community Support