Set pageIndex in Material Paginator

I want to store in session storage pageIndex of my paginator, that is no problem:

onPageChange(event: PageEvent): void {
sessionStorage.setItem('pageIndex',String(this.paginator.pageIndex))
}


Problem for me is restoring this value from sessionStorage

<mat-paginator class="centered-paginator table-content"
aria-label="Wybierz stonę"
app-paginator
translate="yes"
showFirstLastButtons
[appCustomLength]="customLength"
[pageSize]=10
[pageSizeOptions] = "[5, 10, 25]"
(page)="onPageChange($event)"
[resultsLength] = dataSource.filteredData.length>
</mat-paginator>


and in .ts

dataSource = new MatTableDataSource<any>();
@ViewChild(MatPaginator) paginator: MatPaginator = new MatPaginator(new MatPaginatorIntl(), ChangeDetectorRef.prototype);
.....
ngAfterViewInit() {
this.paginator.pageIndex=5 //page on init set to 5, without sessionStorage for now
this.dataSource.paginator = this.paginator;
}


I tried also

[pageIndex]="5"


in mat-paginator declaration in html, but after loading the table I am still on the first page. Do You know maybe what's wrong here?

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