jQuery Grid Plugin - jqGrid

My idea was to have two grids, the second one with only one column, and to drag one value from the second one under one field of a row of the first grid. Something like this:

jQuery("#list2").gridDnD({
        connectWith:'#list1',
        onstart: function (e,ui){
            idid = $(ui.helper).text();    //just for checking
        },                                    
        onstop: function (e,ui){
            jQuery("#list1").setCell(rowid,'my_field_4',$(ui.helper).text());
            $('#list1').trigger("reloadGrid");
            $(ui.helper).dropped = false;     
        }                       
    });