jQuery Grid Plugin - jqGrid

Hi, I have problem with deleting rows depending on what is in cell. I have code:

...

.navButtonAdd("#s2pager",{caption:"Delete file",title:"Delete file", buttonicon :'ui-icon-cancel',
    onClickButton:function(){
        var gr = jQuery("#s2list").getGridParam('selrow');
        if( gr != null )
        {
            var data = jQuery("#s2list").getCell(gr, 'name');
            alert(data);
            jQuery("#s2list").delGridRow(gr,{reloadAfterSubmit:true, delData: {name: data}});
            delete data;
        }
            
        else alert("Select row!");
    }
})

...

First deleted row works great (send via ajax name of file which is in firs cell) but after reload grid another clicking the same button delete and select different row send via ajax the same name when clicking the first time, but alert() show me corrent value. What is wrong?

Regards Paul

Ps. I have jqGrid version  3.5.2