```
if let hrAverage: Int = (oldHR1+oldHR2+oldHR3+oldHR4+heartRate!)/5 {
    print(hrAverage)
} else {
     let hrAverage = (oldHR1+oldHR2+oldHR3+oldHR4) / 4
     print(hrAverage)
}

```

Getting this error saying:

> 
> "Initializer for conditional binding must have Optional type, not Int"
> 
> 
> 

I've been stuck on how to get rid of it. I have to unwrap value `heartRate` using optional binding.