Has anyone managed to get remote paging working with an angular2 example?

I'm setting the gridOptions in the component constructor

export class RowComponent  {
    private gridOptions: IgGrid;
    private pageIndexChanging: any;
    private id: string = "grid";
    private pageSize: number = 500;

 rows: any[];
 
 constructor() {

 this.gridOptions = {
            dataSource: this.rows || [],
            width: "100%",
            height: "600px",
            autoGenerateColumns: false,
            columns: [
                { key: "RowId", headerText: RowId" },
  .........

 }

Then later on setting the datasource when the service I subscribe to returns.

this.Service.getRows().subscribe(rows => this.gridOptions.dataSource = rows);

This is working fine.

I plan to use the pageIndexChanging event to refresh the datasource when the user pages.

How can I programmaticlaly set the TotalRowCount to enable paging?

When I try to add responseDataKey and recordCountKey I get an angaulr error on the igGrid saying it can't diff [object object]