jQuery Grid Plugin - jqGrid

Hello,

Thx in advance for your help !

During the initialisation of a jqGrid, I try to put the colNames and colModel parameters with an array variable of values.

The grid is well created but the colModel paramaters are not taken into account why ?

// ------------- Source Code --------------------- //

colN = new Array ('co11', 'col2', 'col3');
colM = new Array ('{index: "col1", name: "col1", width: 5}', '{index: "col1", name: "col1", width: 10}', '{index: "col1", name: "col1", width: 10}');

                $("#list").jqGrid({
                     jsonReader : {
                     cell: "",
                     id: "0"
                     },
                     url: 'SomeUrl/Getdata',
                     datatype: 'jsonstring',
                     mtype: 'POST',
                     colNames: colN,
                     colModel : colM,

                     pager: jQuery('#pager'),
                     rowNum: 5,
                     rowList: [5, 10, 20, 50],
                     viewrecords: true
                });

// ----------------------------------------------------------- //

Ps :  scuse my bad english