reactive_forms

<ng-container matColumnDef="lockIcon">
          <th mat-header-cell *matHeaderCellDef></th>
          <td mat-cell *matCellDef="let element;let i = dataIndex">
            <div *ngIf="VOForm.get('VORows')?.value[i]?.name?.length > 1"><mat-icon
                color="primary">lock</mat-icon></div>
          </td>
        </ng-container>

VOForm is my formGroup and VORows is formArray