Display Dynamic Red Line to the Column Border Color in SSRS Report

I am displaying the red line in the beginning of the current week column in the matrix table. But for few resources the red line is missing. For Example in below screenshot, refer the 'Adrian Larkin' resource. Here is the SSRS report border expression which is comparing the [TimeByDay] with the current Week First Monday Date to display the red bar -

=IIf(Fields!TimeByDay.Value = DATEADD("d", -(WeekDay(Today(),2))+1, Today()), "Red", "Black")"

Here is the dataset result set. If you refer the column [TimeByDay], it has no record for the date 11/05/2015 for the Adrian resource as he has no assignment for the date 11-05-2015.

Any suggestion to display the red missing line red bar using the expression or any other solution.

Thanks in advance for your help.

Badal Ratra MCTS