jQuery Grid Plugin - jqGrid

I have following code to create my jqGrid which works for 30 to 70 records.

The pager failed to scroll when my data set return more than 300 records.

Because the start date and end date, it returns more 300 records sometimes. The pagers shows page 1 of 33 and view of 1 - 10 of 325 which is fine when jqGrid created.

I tried to click next page than the pager shows page 2 of 1 and no records to view.

I am able to scroll the pages when the data set return around 70 records.

Do I misss any information to pass the url function like ROWS, PAGE, TOTAL and TOTAL RECORDS?

I have jsonReader to get information, but should I send those information at run time while user click on next page.

Thanks in advance for the information and help,

Regards,

Iccsi,

 $("#MyGrid").jqGrid({
        url: 'MyUrl.cfc?method=MyMethod&StartDate=01/01/2008&EndDate=05/05/2011',
        datatype: 'json',
 mtype: 'GET',
        colNames: [ 'MyID','MyName','MyDate','MyNote'],
        colModel: [
      { name: 'MyID', width: 40  },
       { name: 'MyName', width: 40 },
            { name: 'MyDate', width: 50 },
            { name: 'MyNote', width: 50 }
           
                   
        ],
        pager: $('#GirdPager'),
        rowNum: 10,
        rowList: [10, 20, 30],
        sortname: 'MyID',
        sortorder: 'desc',
        viewrecords: true,
        gridview: true,
        autoencode: true,
  pginput: true,
        caption: 'My Gird',
       
  jsonReader: {root: "ROWS",
               page: "PAGE",
                    total: "TOTAL",
                    records: "RECORDS",
                    cell: "",
                    id: "0"
                    },
  
      
    }

    });