# FAQ: Routing - Add Optional Route Templates

This community-built FAQ covers the “Add Optional Route Templates” exercise from the lesson “Routing”.

Paths and Courses
This exercise can be found in the following Codecademy content:

## FAQs on the exercise Add Optional Route Templates

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Just wanted to point out a minor thing in case anyone else comes across it:

The code shown in the hint for step 4 reads:

``````public void OnGet(int? day)
{
if (day.HasValue)
{
CurrentDay = day.Value;
DisplaySteps = Days.Sum(d => d.Steps);
DisplayMinutesExercise = Days.Sum(d => d.MinutesExercise);
PercentProgressSteps = PercentProgress(DisplaySteps, idealSteps * Days.Count);
PercentProgressMinutesExercise = PercentProgress(DisplayMinutesExercise, idealMinutesExercise * Days.Count);
}
}
``````

But - the logic for DisplaySteps and DisplayMinutesExercise are for when day does not have a value.

Instead it should be the code that was there to begin with:

``````  public void OnGet(int? day)
{
if(day.HasValue)
{
CurrentDay = day.Value;
DisplaySteps = Days[CurrentDay].Steps;
DisplayMinutesExercise = Days[CurrentDay].MinutesExercise;
PercentProgressSteps = PercentProgress(DisplaySteps, idealSteps);
PercentProgressMinutesExercise = PercentProgress(DisplayMinutesExercise, idealMinutesExercise);
}
}
``````