Formatting a crossTab Report

[akinia]

Hi! Everybody

I've made a CrossTab Report per day for a whole month, which works quite fine but I still have a problem. I need to Change The border of some lines when for example it' s Week-end. I've created my condition in the change color border of the summarized field ( If Dayofweek "name.field" = 1 or Dayofweek "name.field" = 7 then Red else no color ). I've got everything in Red ; Doe's anyone know why ?

Thanks for your answers.