Attribute routing with multiple leading null commas

Current ActionResult:

[Route("EvaluatorSetup/{evalYear}/{department}")]
public ActionResult RoutedEvaluatorSetup(int evalYear, string department)
{
    return EvaluatorSetup((int?)evalYear, department);
}

      

        
        
        
      

    

I would like to use url:

/EvaluatorSetup/2014/001.3244

      

        
        
        
      

    

where {department} is ultimately a string, however, routing does not collect {department} as a string.

and. I don't know what type MVC expects for "001.3244", or what it picks up like.

Q. I want to store it as a string with optional leading zeros like in the example.

What am I doing wrong?

Update:

What I mean is when I put a break in my code on the back line it never fires.

/EvaluatorSetup/2014/foobar (WORKS!)

/EvaluatorSetup/2014/001.3244 (DOESN'T WORK!)

      

        
        
        
      

    

This leads me to think that my routing is wrong:

[Route("EvaluatorSetup/{evalYear}/{department}")]

      

        
        
        
      

    

In particular, 001.3244 doesn't seem to be a valid string. So my question is how can I fix this:

[Route("EvaluatorSetup/{evalYear}/{department}")]
public ActionResult RoutedEvaluatorSetup(int evalYear, string department)

      

        
        
        
      

    

so that I can inject uri:

/EvaluatorSetup/2014/001.3244

      

        
        
        
      

    

preferably where leading zeros are supported.

I thought of something like this:

[Route("EvaluatorSetup/{evalYear}/{corporation}.{department}")]

      

        
        
        
      

    

However, this is an assumption. I don't even know if it really is.

Additional update:

old route in RouteConfig.cs (which doesn't work anymore):

routes.MapRoute(
    "evaluations_evaluatorsetupget",
    "evaluations/evaluatorsetup/{evalyear}/{department}",
    new { controller = "evaluations", action = "evaluatorsetup", evalyear = @"^(\d{4})$", department = @"^(\d{3}\.\d{4})$" },
    new { evalyear = @"^(\d{4})$", department = @"^(\d{3}\.\d{4})$" }
    );