Grid.mvc Setup initial column filtering

Question

I use Grid.MVC to show my data to user. I need to setup initial column filtering for column "active" after page loads first time.

I read document page of Grid.MVC and it says i should add .SetInitialFilter() to the column but it does not work for me. If you have any idea, please let me know it

Grid.MVC document page

@Html.Grid(Model).Named("MVCGrid").Columns(columns =>{ 
columns.Add(e => e.id).Titled("id");
columns.Add(e => e.usernumber).Titled("user number");
columns.Add(e => e.active).Titled("active").SetInitialFilter(GridFilterType.Equals, "true");
columns.Add(e => e.manager).Titled("manager");}).WithPaging(28).Filterable().WithMultipleFilters().Sortable().WithGridItemsCount()