Récupération de champs avec un formulaire dynamique

Bonjour,
dans mon formulaire j'ai 2 radio buttons (ex: A et B) qui permettent de choisir le type de compte que l'on veut créer.
Par défaut, le formulaire se charge selon le type A mais si l'utilisateur clique sur B de nouveaux champs apparaissent.

Mon problème est que lorsque je veux valider et/ou récupérer les valeurs rentrées dans les champs du formulaire, sont seulement disponibles celles du formulaire A.
Je pense que les champs du formulaire B ne sont pas présents dans le DOM et donc inaccessibles.

Voici mon formulaire :

Code:

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<div class="container-fluid">
    <form [formGroup]="myForm" autocomplete="off" novalidate (ngSubmit)="createUserAccount(myForm.value)">
    <div class="container py-5 h-100 d-flex justify-content-center">
    <div class="col-xl-10">
      <!-- Body -->
      <div class="card-body p-md-15  text-black bg-light">
        <!-- Brand -->
        <div class="row">
          <span class="fw-bold text-secondary d-flex align-items-center">
            <i class="bi-geo-alt-fill color-primary"></i>
            <a href="#" class="navbar-brand color-secondary">Food<b class="color-primary">Truck</b></a>
          </span>
          <hr class="mt-2 color-light-gray">
          <h3 class="mb-4 text-uppercase color-secondary">Création compte</h3>
        </div>
 
        <div class="row">
          <!-- Account Type -->
          <div class="d-md-flex justify-content-start align-items-center mb-4 py-2">
            <h6 class="mb-0 me-4">Type de compte : </h6>
            <div class="form-check form-check-inline mb-0 me-4">
              <input class="form-check-input" type="radio" [checked]="this.customerAccount" name="accountType" id="CustommerAccount" (click)="toggleIsCustomer()"/>
              <label class="form-check-label" for="CustomerAccount">Client</label>
            </div>
 
            <div class="form-check form-check-inline mb-0 me-4">
              <input class="form-check-input" type="radio" [checked]="this.truckAccount" name="accountType" id="TruckAccount" (click)="toggleIsTruck()" />
              <label class="form-check-label" for="TruckAccount">Commerçant</label>
            </div>
          </div>
 
          <!-- Gender -->
          <div class="or-seperator mt-3 color-secondary mb-1"><b>Données du compte</b></div>
          <hr class="color-light-gray">
          <div class="d-md-flex justify-content-start align-items-center mb-4 py-2">
            <div class="col-md-2 me-5 form-group">
              <select class="form-select form-control" id="gender"  formControlName="gender">
                <option *ngFor="let g of genders" [ngValue]="g.id" >{{g.description}}</option>
            </select>
            </div>
            <!-- firstname -->
            <div class="col-md-4 me-4">
              <input type="text" class="form-control" formControlName="firstname" id="firstname" placeholder="Prénom" aria-label="First name">
              <em *ngIf="validateControl('firstname') && hasError('firstname', 'required')">Prénom obligatoire</em>
            </div>
            <!-- lastname -->
            <div class="col-md-5 ms-2">
              <input type="text" class="form-control" formControlName="lastname" id="lastname" placeholder="Nom" aria-label="Last name">
              <em *ngIf="validateControl('lastname') && hasError('lastname', 'required')">Nom obligatoire</em>
            </div>
          </div>
        </div>
        <div class="row">
          <div class="col input-group">
            <div class="col-md-4 me-4">
              <div class="input-group">
                <span id="basic-addon1" class="input-group-text">
                <i class="bi bi-person-fill"></i>
                </span>
              <input type="text" class="form-control" formControlName="username" id="username" placeholder="Username" aria-label="User name">
              <em *ngIf="validateControl('username') && hasError('username', 'required')">Nom d'utiliateur obligatoire</em>
            </div>
          </div>
          <span id="basic-addon1" class="input-group-text">
            <i>@</i>
          </span>
            <input type="text" class="form-control" formControlName="mail" id="mail"  placeholder="mail" aria-label="Mail">
            <em *ngIf="validateControl('mail') && hasError('mail', 'required')">Mail obligatoire</em>
          </div>
        </div>
 
        <div class="row mt-4">
          <div class="col-md-4">
            <input type="text" class="form-control" formControlName="login" id="login" placeholder="Login" aria-label="login">
            <em *ngIf="validateControl('login') && hasError('login', 'required')">Login obligatoire</em>
          </div>
          <div class="col-md-4">
            <input type="text" class="form-control" formControlName="password" id="password" placeholder="Password" aria-label="Password">
            <em *ngIf="validateControl('password') && hasError('password', 'required')">Mot de passe obligatoire</em>
          </div>
          <div class="col-md-4">
            <input type="text" class="form-control" formControlName="confirmpassword" id="confirmpassword" placeholder="ConfirmPassword" aria-label="Confirm Password">
          </div>
        </div>
 
        <!-- Truck Datas -->
        <div class="row">
          <div class=" mt-5">
            <div class="or-seperator mt-3 color-secondary mb-1" [hidden]="!truckAccount"><b>Données companie</b></div>
            <hr class="mt-1 color-light-gray">
            <div class="row">
              <div class="col-md-12 me-5 mb-3 form-group" [formGroup]="myForm">
               </div>
            </div>
            <!-- Truck Name  -->
          <div class="row">
            <div class="col-md-6 mt-2 mb-4" [hidden]="!truckAccount">
              <input type="text" class="form-control" placeholder="Nom du camion" formControlName="name" id="name" aria-label="name">
              <em *ngIf="truckAccount && validateControl('name') && hasError('name', 'required')">Nom de camion obligatoire</em>
            </div>
            <div class="col-md-6 mb-4" [hidden]="!truckAccount">
              <div class="input-group">
                <div class="input-group-text">@</div>
                <input type="text" class="form-control" placeholder="Mail commercial" formControlName="commercialmail" id="commercialmail" aria-label="TruckEmail">
                <em *ngIf=" truckAccount && validateControl('commercialmail') && hasError('commercialmail', 'required')">Mail commercial obligatoire</em>
              </div>
              </div>
          </div>
          <div class="row">
            <div class="col-md-6 mb-4">
              <div class=" input-group">
                  <span id="basic-addon1" class="input-group-text">
                    <i class="bi bi-telephone-fill"></i>
                </span>
                <input type="text" class="form-control" placeholder="Téléphone commercial" formControlName="phone" id="phone" aria-label="ProfessionalPhone">
                <em *ngIf="truckAccount && validateControl('phone') && hasError('phone', 'required')">Mail commercial obligatoire</em>
              </div>
            </div>
            <div class="col">
              <input type="text" class="form-control" placeholder="Numéro de TVA" formControlName="vatnumber" id="vatnumber" aria-label="TVA">
              <em *ngIf="validateControl('vatnumber') && hasError('vatnumber', 'required')">Numéro de TVA obligatoire</em>
            </div>
          </div>
        </div>
        </div>
        <div class="row">
          <hr class="mt-5 ml-4 mr-4 color-light-gray">
 
          <!-- Submit Button -->
          <div class="d-flex justify-content-end pt-3">
            <button type="button" class="btn btn-secondary">Reset all</button>
            <button type="submit" class="btn btn-primary shadow-none  ms-2">Submit form</button>
          </div>
        </div>
      </div>
      <!-- Fin Body -->
      </div>
    </div>
</form>
<!-- <app-success-modal [modalHeaderText]="'Success message'" 
    [modalBodyText]="'Action completed successfully'" [okButtonText]="'OK'" 
    (redirectOnOK)="redirectTo()"></app-success-modal>
 
    <app-error-modal [modalHeaderText]="'Error message'" 
    [modalBodyText]="errorMessage" [okButtonText]="'OK'"></app-error-modal> -->
</div>

et voici comment je récupère les valeurs :

Code:

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private executeUserAccountCreation = (form) =>{
    if(this.truckAccount){
      console.log(" test = " + this.truckAccount);
      const truck: Truck = {
        name:  this.myForm.get('name')?.value,
        commercialMail: this.myForm.get('commercialmail')?.value,
        phone: this.myForm.get('phone')?.value,
        vatnumber: this.myForm.get('vatnumber')?.value,
        description: '',
      }
 
      let apiTruck: string = environment.apiAddress + 'Truck/Registration';
      this.repository.create(apiTruck, truck)
      .subscribe(response => {
        console.log('New Truck Id : ' + response);
        this.truckId = <number>response;
 
        $('#successModal').modal();
      },
      (error =>{
        this.errorHandler.handleError(error);
        this.errorMessage = this.errorHandler.errorMessage;
      })
      );
    }
 
    const userAccount:  UserAccount = {
      firstName: this.f.firstname.value,
      lastName: this.f.lastname.value,
      mail: this.f.mail.value,
      genderId: this.f.gender.value,
      password: this.f.password.value,
      userName: this.f.username.value,
      login: this.f.login.value,
      useraccountTypeId: this.customerAccount == true ? 1 : 2,
      name:  this.truckAccount == true ? this.f.name.value : null,
      commercialmail: this.truckAccount == true ? this.f.commercialmail.value : null,
      phone: this.truckAccount == true ? this.f.phone.value : null,
      vatnumber: this.truckAccount == true ? this.f.vatnumber.value : null,
      truckId: <number>this.truckId
    }
 
    let apiUserAccount: string = environment.apiAddress + 'UserAccount/Registration';
    this.repository.create(apiUserAccount, userAccount)
      .subscribe(response => {
        $('#successModal').modal();
      },
      (error =>{
        this.errorHandler.handleError(error);
        this.errorMessage = this.errorHandler.errorMessage;
      })
      )
  }