Set page size options on EJ2 ASP.NET Core Grid

Hey all, I'm struggling with setting up page sizes on a grid set up with paging. I have the grid defined as below but I cannot seem to find an option to define page sizes, I'm only able to use the default ones (All, 5, 10, 12, 20.)

<ejs-grid id="grd" allowPaging="true" allowSorting="true" dataBound="grd_databound">
<e-grid-pagesettings pageSizes="true"></e-grid-pagesettings>
<e-grid-columns>
 ...
</e-grid-columns>

<ejs-grid id="Grid" dataSource=@ViewBag.DataSource allowPaging="true">   <e-grid-pagesettings pageSizes="@(new string[] { "5", "10" , "All" })"></e-grid-pagesettings>      <e-grid-columns>          . . .  </ejs-grid>