jQuery Grid Plugin - jqGrid

Hi,

I need to programaticaly set the selected row after the grid has been fully loaded.

I use the grids ability to return userdata to get from the server what the first row is, or the last selected row from

the PHP session.

 function ongridcomplete()
                {
                    var userdata = $("#companygrid").getGridParam('userData');
                      $("#companygrid").setSelection(userdata.firstid,true);
                     }

The values get returned, but what happens is the grid selection becomes locked and I can't select any rows.