How to update the length in getRangeLabel mat paginator

  @Injectable()
  export class MyCustomPaginatorIntl extends MatPaginatorIntl {
     public getRangeLabel = (page: number, pageSize: number, length: number): string => {

                if (length === 0 || pageSize === 0) {
                    return `${this.noRecord}`;
                }
                length = Math.max(length, 0);
                const startIndex = ((page * pageSize) > length) ?
                    (Math.ceil(length / pageSize) - 1) * pageSize :
                    page * pageSize;

                const endIndex = Math.min(startIndex + pageSize, length);
                this.getAndInitTranslations(startIndex, endIndex, length);
                return `${this.totalRecord}`;

            }
    }

I am trying to update the length (total record) i.e length say 100, is it possible to pass length value to getRangeLabel from another ts file in same component after paginator is called dataSource.paginator = this.paginator;

export class NewComponent implements OnInit(){

    length = 120;
    public ngOnInit() {
          this.dataSource = new MatTableDataSource(this.data);
          this.dataSource.paginator = this.paginator

     //After this can i able to update the getRangeLabel with custom length 120
     }
}