About store Field length

[supermanok]

hey guys:
i'm writing cms now,has a trouble
about store field length

there is fck editor in my page
i copy some short arctile paste at this editor and sumit,it's ok,can be submit,no failed.
i copy a long arctile paste at this editor and submit,can be submit,But ,when the store reload
see this picture,it has exception


my code

var savingNews=function()
{
    treePanelNews=Ext.getCmp("treeType");
    if($("#txtTitle").val()=="")
    {
       Ext.MessageBox.alert('alert','must be need');
    }
    else if(Ext.getCmp("cbxSelectType").getValue()=="")
    {
        Ext.MessageBox.alert('alert','must be need');
    }
    else if(FCKeditorAPI.GetInstance('txtContent').GetHTML()=="")
    {
        Ext.MessageBox.alert('alert','must be need');
    }
    else{
        alert(11);
        node= treePanelNews.getSelectionModel().getSelectedNode();
        var Addingcontent=FCKeditorAPI.GetInstance('txtContent').GetHTML();
        if(Ext.getCmp("CheckboxGroup1").items.items[0].checked){isTop=1;}else{isTop=0;}
        if(Ext.getCmp("CheckboxGroup1").items.items[1].checked){isHot=1;}else{isHot=0;}
        if(Ext.getCmp("CheckboxGroup1").items.items[2].checked){isRecommend=1;}else{isRecommend=0;}
        if(Ext.getCmp("CheckboxGroup1").items.items[3].checked){isEnable=1;}else{isEnable=0;}
        jQuery.ajax({
            type:"POST",
            url:"SavingNews.aspx",
            data:"title="+$("#txtTitle").val()+"&TypeId="+node.id+"&Top="+isTop+"&Hot="+isHot+"&enable="+isEnable+"&recomond="+isRecommend+"&newsContent="+escape(Addingcontent)+"&OPType="+1,
            cache:false,
            success:function(data){
                gvNews.reload();
                winEdit.hide();
            },
            error: function(){
            Ext.MessageBox.alert("alert","submit failed");
            gvNews.reload();
        }
        })
    }
}

[Vladimir]

Hi,

Unfortunatelly I can't read on Chinese. Can you create simple example and post steps to reproduce the problem. We need test it locally