Javascript 未在formArray中设置值

我已经编辑了第8页。在这一页我有一个表格，我需要填写它

我用formArray设置值形式

现在我将此代码用于设置值：

ts:

这是html代码：

 <div class="answer col-lg-12 kt-margin-bottom-20-mobile">
                        <div formArrayName="courseOptions" class="row m-auto"
                            *ngFor="let project of editQuestionFG.get('courseOptions').controls; let i = index">
                            <ng-container [formGroupName]="i">
                                <div class="col-lg-1 kt-margin-bottom-20-mobile icon remove text-center">
                                    <label (click)="deleteItem(i)"><i class="la la-trash"></i></label>
                                </div>
                                <div class="col-lg-8 kt-margin-bottom-20-mobile">
                                    <mat-form-field class="mat-form-field-fluid" appearance="outline">
                                        <mat-label>{{'GENERAL.TITLE' | translate}} *</mat-label>
                                        <input matInput formControlName="optionTitle"
                                            [placeholder]="'GENERAL.TITLE' | translate">
                                    </mat-form-field>
                                </div>
                                <div class="col-lg-3 kt-margin-bottom-20-mobile icon">
                                    <mat-radio-group name="radp" aria-label="Select an option"
                                        formControlName="isCorrect">
                                        <mat-radio-button value='true'>صحیح</mat-radio-button>
                                    </mat-radio-group>
                                </div>
                            </ng-container>
                        </div>
                        <div class="add-Item">
                            <button (click)="AddItems()" mat-raised-button type="button"
                                color="accent">{{'COURSE_QUESTION.ADD_NEW_OPTION' |translate}}</button>
                        </div>
                    </div>

{{'GENERAL.TITLE'| translate}}*
صحیح
{{'COURSE{u QUESTION.ADD{u NEW{u OPTION'{124; translate}}

当我使用此代码时，它会填充

选项标题

，但不会在单选按钮值中设置

isCorrect

---

有什么问题？我如何解决这个问题？？？

为了让您选中单选按钮，您需要填写checked属性@EugeneSunic请用我的代码给我看如果您可以创建一个相同的Stackblitz示例，将更容易提供帮助。

 <div class="answer col-lg-12 kt-margin-bottom-20-mobile">
                        <div formArrayName="courseOptions" class="row m-auto"
                            *ngFor="let project of editQuestionFG.get('courseOptions').controls; let i = index">
                            <ng-container [formGroupName]="i">
                                <div class="col-lg-1 kt-margin-bottom-20-mobile icon remove text-center">
                                    <label (click)="deleteItem(i)"><i class="la la-trash"></i></label>
                                </div>
                                <div class="col-lg-8 kt-margin-bottom-20-mobile">
                                    <mat-form-field class="mat-form-field-fluid" appearance="outline">
                                        <mat-label>{{'GENERAL.TITLE' | translate}} *</mat-label>
                                        <input matInput formControlName="optionTitle"
                                            [placeholder]="'GENERAL.TITLE' | translate">
                                    </mat-form-field>
                                </div>
                                <div class="col-lg-3 kt-margin-bottom-20-mobile icon">
                                    <mat-radio-group name="radp" aria-label="Select an option"
                                        formControlName="isCorrect">
                                        <mat-radio-button value='true'>صحیح</mat-radio-button>
                                    </mat-radio-group>
                                </div>
                            </ng-container>
                        </div>
                        <div class="add-Item">
                            <button (click)="AddItems()" mat-raised-button type="button"
                                color="accent">{{'COURSE_QUESTION.ADD_NEW_OPTION' |translate}}</button>
                        </div>
                    </div>