How to filter numbers in a drop down list?

I have an HTML table with a numeric variable called statut.

The statut variable is a drop-down list, it has two values -> 1 and 9.

The method in typescript seems to be correct

  public selectedBrand: any;
  public onChangeStatut(statut: number) {
    this.selectedBrand = statut;
    this.filteredCustomer = this.customerTransferts.filter(
        (item) => item.statut === this.selectedBrand
    );
    console.log(this.filteredCustomer);
  }

I think my problem is the HTML, how to make the HTML know that it must filter a number and not a string?

<select class="form-select" style="max-width: 100px" [ngModel]="selectedBrand" (ngModelChange)="onChangeStatut($event)">
  <option [value]="'1'" >1</option>
  <option [value]="'9'">9</option>
</select>

Thank you for your help.

Answer

Casting this.selectedBrand to a number should work. The + will do the trick here.

item.statut === +this.selectedBrand