extjs4 - Add value to extjs textarea from store -

i want data mongo data base , add extjs text area.

everything ready, mongo data base returns list of user email addresses want add extjs text area.

i use code:

var index = ext.storemgr.lookup("writeup.store.employee").findexact('name',name); var rec = ext.storemgr.lookup("writeup.store.employee").getat(index); alert(rec.data.name); 

but error:

typeerror: ext.storemgr.lookup(...) undefined 

and store

ext.define('writeup.store.employee', { extend: 'ext.data.store', model: 'writeup.model.employee', autoload: true,  proxy: {     type: 'ajax',     actionmethods: {         read   : 'post'     },     api: {         read : 'user/view.action'     },     reader: {         type: 'json',         root: 'data',         successproperty: 'success'     },     writer: {         type: 'json',         writeallfields: true,         encode: false,         root: 'employee'      },     listeners: {         exception: function(proxy, response, operation){             ext.messagebox.show({                 title: 'remote exception',                 msg: operation.geterror(),                 icon: ext.messagebox.error,                 buttons: ext.msg.ok             });         }     } } }); 

try

load code controller

                var store_name = ext.create('ext.data.store', {                     model: 'model name'                 });                 store_name.load();                 store_name.each(function(record){                      for(var i=0;i<record.data.yourlocalstorageid.length;i++){                         var index = record.data.yourlocalstorageid[i].name;                      }                   }