I have an app with club -> members -> transactions, which are hierarchical.
Now I want to implement the function, to edit e.g. the amount of a transaction. The reason of a transaction isn't difficult, but I cannot assign a optional type of a `Double?` to a `textfield` or `label`.

So my question is: How can I assign this to it?/ How can I convert it to a string?

This error is shown to me : `Cannot invoke initializer for type 'String' with an argument list of type '(Double?)/(Date?)'`

This is my code:

```swift
reasonlbl.text = transaction?.reason
dateLbl.text = String(transaction?.date)
amountLbl.text = String(transaction?.money)

```