How to set background color based on values in column grouping

Question

Hello,
I have query
select 1 as CustomerID,'Reality' as Type, 100 as Turnover
UNION
select 1 as CustomerID,'Budget' as Type, 120 as Turnover
UNION
select 2 as CustomerID,'Reality' as Type, 140 as Turnover
UNION
select 2 as CustomerID,'Budget' as Type, 120 as Turnover
I have matrix, where in rows are customers, there is columngroup based on field Type and in details are summaries of Turnover. I need to change background color of Reality field, when lower than Budget. How can I do that please ?

Answer 1

Hi volyn,
After testing the issue in my own environment, we can use custom code to achieve your requirement. For more details, you can refer to the following steps:
Copy the custom code below and paste it to your report. (Right-click report>Report Properties>Code)
DIM PreviousValue AS Decimal
Dim CustomerID AS String = ""
Public Function  GetPreviousValue(byval Val as Decimal, byval CusID as string)  as Decimal
DIM Local_PreviousValue AS Decimal
IF CustomerID <> CusID THEN
CustomerID  = CusID 
PreviousValue  = val
Local_PreviousValue  = 0
ELSE
Local_PreviousValue =  val - PreviousValue 
PreviousValue  = val
END IF
return Local_PreviousValue 
End function
Click the cell which contains [Sum(Turnover)] value, modify the expression of BackgroundColor property to like this in the Properties Window: 
=iif(Code.GetPreviousValue(Fields!Turnover.Value,Fields!CustomerID.Value)<0,"Brown","White")
In this scenario, you can change Brown color to any color you like. The following screenshot is for your reference (I added some data to make it more clearly):
If you have any other questions, please feel free to ask.
Thanks, 
Katherine Xiong
Katherine Xiong
TechNet Community Support