Dleting the grid state

Hi...

I am able to saving the grid state and deleting the grid state.

Everything is working fine.

But in deleting the grid state...

If i have the row numbers in grid i am getting the error like TypeError: el is null ext-all-debug.js:32457(only in the case of grid have the row number).

Otherwise its working fine.

Help me in this.

Here is my code to delete the grid state.

Code:

  resetStateCmc:function(){            var me = this;
                var satandardState = me.getState();
                var paramObj = {
                        gridId : this.gridId || this.id,
                        gridCd :  me.down('#gridCdItemId').getValue(),
                        userId : Modules.GlobalVars.loginUserId
                };
                me.mask('Deleting state...');
                try {
                        Ext.Ajax.request({
                                url : 'gridstate/deleteGridStateDtls',
                                method : 'POST',
                                params : paramObj,
                                success : function(response) {
                                        delete Modules.GlobalVars.gridStatObj[paramObj.gridId];
                                        me.reconfigure(me.getStore(),me.originalColumns);
                                        me.view.refresh();
                                        me.down('#gridCdItemId').reset();
                                        me.unmask();
                                },
                                failure : function() {
                                        me.view.refresh();
                                        me.unmask();
                                } 


                        }); 
                } catch (e) {
                        console.log(e.message);
                        Ext.getBody().unmask();
                }        
        },

Modules.GlobalVars.gridStatObj

"{"

columns ":[{"

width ":24,"

header ":" & #160;"},{"

dataIndex ":"

exitMode ","

width ":55,"

header ":"

Exit Mode "},{"

dataIndex ":"

intViaNo ","

hidden ":true,"

width ":100,"

header ":" & #160;"},{"dataIndex":"curLocInd","hidden":true,"width":100,"header":"&# 160;

"}]}"

Please help me in this...

Thanks In Advance

Kamalakar

Dleting the grid state