ssrs Bar chart

Hi 

   I need help for ssrs bar chart color separator. I already apply particular field color code but when i run that time color was not shown. I used below formula for color separator .This formula I applied in series Properties ->fill ->set expression

=Switch(
Fields!status.Value="No of Cases Resolved","#00afee"
,Fields!status.Value="Noof cases created","#3c6997"
,Fields!status.Value="No of  case In Progress ","#d3d4da"
)

  can you please help me to solve issue. It will very help full for me

Thanks in advance