How to create a controller on Dart using Maps and Lists?

Question

I've got this code where I'm displaying multiple CheckboxListTile widgets on my screen. I need to create a controller for them, but I'm having some trouble. Could you help me? Thanks in advance. I have already the Model, entity, mapper and so on in order to use the Clean architecture.

import 'package:flutter/material.dart';
import 'package:get/get.dart';

class ClinicHistoryController extends GetxController {
  final ClinicHistoryRepository clinicHistoryImpl;
  ClinicHistoryController(this.clinicHistoryImpl);
  List<ClinicHistory> clinicHistoryList = [];

  List<BoolItemElectronicFile> familyHeritageData = [
    BoolItemElectronicFile(name: "Cancer", value: false),
    BoolItemElectronicFile(name: "Cardiopatías", value: false),
    BoolItemElectronicFile(name: "Diabetes", value: false),
    BoolItemElectronicFile(name: "Hepatopatías", value: false),
    BoolItemElectronicFile(name: "Hipertensión", value: false),
    BoolItemElectronicFile(name: "Obesidad", value: false),
    BoolItemElectronicFile(name: "Osteoporosis", value: false),
  ];
  List<ItemElectronicFile> pathologiesdata = [
  //items
  ];
  List<ItemElectronicFile> symptomsPresentingdata = [
    //items
  ];
  MedicalTreatments medicalTreatmentsdata =
      MedicalTreatments(medicalTreatments: " ");

  PerformedSurgeries performedSurgeriesdata =
      PerformedSurgeries(performedSurgeries: " ");

//moreitems
  

  handleHereditarydata(dynamic newValue) {
    familyHeritageData = newValue;
    update();
  }

  handlesufferingPathologies(dynamic newValue) {
    pathologiesdata = newValue;
    update();
  }
handlesymptoms(dynamic newValue) {
    pathologiesdata = newValue;
    update();
  }

  Future addClinicHistory() async {
    final newClinicHistory = ClinicHistory(
        familyHeritageData: familyHeritageData,
        sufferingPathologies: pathologiesdata,
        symptomsPresenting: symptomsPresentingdata,
        medicalTreatments: medicalTreatmentsdata,
        performedSurgeries: performedSurgeriesdata,
        //moreitems
        );
    try {
      await clinicHistoryImpl
          .addClinicHistory(history: newClinicHistory, idUser: "ADFGSDF")
          .then(
            (value) => Get.snackbar("Nuevo metodo de pago", "Pago registrado.",
                backgroundColor: Colors.green[100],
                duration: const Duration(seconds: 5)),
          );
      update();
    } catch (e) {
      Get.snackbar('Invalido', 'Invalido',
          backgroundColor: Colors.red[900],
          duration: const Duration(seconds: 5));
    }
  }
}

This is the implementation file:

import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:flutter/material.dart';
import 'package:get/get.dart';

class ClinicHistoryDatasourceFirebase implements ClinicHistoryDataSource {
  CollectionReference clinicHistoryref =
      FirebaseFirestore.instance.collection('Expediente');

  @override
  Future addClinicHistory(
      {required ClinicHistory history, required String idUser}) async {
    await clinicHistoryref
        .doc(idUser)
        .set(ClinicHistoryFileMapper.toJson(history))
        .whenComplete(() => Get.snackbar(
            "Nuevo Expediente Electronico", "Expediente registrado.",
            backgroundColor: Colors.green[100],
            duration: const Duration(seconds: 5)))
        .catchError((error, stackTrace) {
      Get.snackbar("Error", "Intentalo de nuevo",
          backgroundColor: Colors.red[900],
          duration: const Duration(seconds: 5));
      print(error.toString());
    });
    return clinicHistoryref;
  }