Value mask with ngx-mask

I'm trying to make a value mask using ngx-mask, but I'm not able to use the "." and ",".

I've tried something like:

<input type="text" class="form-control" specialCharacters="[',','.']" mask="000000000000" [(ngModel)]="filtraValorCustoMinimo" name="filtraValorCustoMinimo" id="filtraValorCustoMinimo"/>