Use form_validator to check that the email is the same - flutter

Question

I'm using the form_validator Flutter plugin to create a form block.
My form contains contains a lot of fields including Email and Email confirmation:
TextFormField(
validator: ValidationBuilder()
.email()
.maxLength(50)
.required()
.build(),
decoration: const InputDecoration(labelText: 'email'),
),
const SizedBox(height: 30),
TextFormField(
validator: ValidationBuilder()
.email()
.maxLength(50)
.required()
.build(),
decoration:
const InputDecoration(labelText: 'email confirmation'),
),
They are equals, the only thing that changes is the label. How can I add a check to the second field (EMAIL CONFIRMATION) that controls that it's the same value of the first one?
Example:
EMAIL: john.snow#gmail.com
EMAIL CONFIRMATION: john.snow#gmail.com
--> ok
EMAIL: john.snow#gmail.com
EMAIL CONFIRMATION: harry.potter#gmail.com
--> error

Answer 1

You could simply use 2 text controllers like say,
emailTextController
confirmEmailTextController
Make sure you add the following validator method in the Confirm Email TextFormField
validator: (value) {
if (value != emailTextController.text) {
return 'Email is not matching';
}
},
And you get the respective errorText, whose fontStyle can be adjusted.