SSRS Report Parameters Display In Report

Hello,

I have a multivalued report parameter. My report has several fields that displays the result based on the selected filter that appears in any one of the available fields. I want to try these things...

1. If anyone of the selected parameter appears in anyone of the field, display that field value in red color else not.

for this I am using something like this...

IIF(Fields!Products.Value.Equals(Parameters!Category.Value) =True, "RED","BLACK" ) & "<BR/><BR/>"&

"Sales %: " (Fields!Sales_Percent.Value)

I know I have to use the expression in the background property of the field, but I am also concatenating other field values in the same cell..I am not able to achieve this...Is there any work around method for this. Any help appreciated!

Thanks

Hanu