Summing two textfield in another textfield.

Hi everyone,

I'm working on a Flutterflow app where I have a form for adding wine entries. When adding a new wine, the form includes the following text fields:

• wineQuantity (indicating the number of bottles purchased)

• priceSingle (indicating the price per bottle)

• priceForAll (which should indicate the total price)

I want to automatically calculate the priceForAll based on the inputs provided in wineQuantity and priceSingle.

For example, if a user inputs:

• wineQuantity: 2

• priceSingle: 100

I want priceForAll to automatically update to 200.

I have used Code Pilot to create this custom function:

int? totalPriceCalculation(
  int? wineQuantity,
  int? priceSingle,
) {
  /// MODIFY CODE ONLY BELOW THIS LINE

  // Automatically calculate and update priceForAll in a form based on the inputs in wineQuantity (number of bottles) and priceSingle (price per bottle)
  int? priceForAll;
  if (wineQuantity != null && priceSingle != null) {
    priceForAll = wineQuantity * priceSingle;
  }
  return priceForAll;

  /// MODIFY CODE ONLY ABOVE THIS LINE
}

However, I haven't been able to get it to work, and I'm not sure where the issue lies.

Could anyone help me figure out what might be going wrong?

Thanks in advance!