SSRS report:Alternating rows colur in Grid


I have cretaed new SSRS report with Precision Desigm…i need Alternating rows colour in the grid .so i changed Design Style :Alternating Rows Style Template but i dint get it …so please suggest how could we do that


I got a solution…Need to write expression on the background colour property of the row



“Subject”) Mod 2 = 0, Nothing, “LightGrey”)