Hi,
I want to create a treelist in sencha modern through a json.
Sencha callback to server but no paint the treelist. Sencha no say any errors, but "Tree2" in console produces undefined although treeNode show constructor with json server.

View:
Code:
Ext.define('Myapp.view.main.MainConfig', {
   
    extend: 'Ext.Panel',
    requires: [Myapp.store.Tree],
    xtype:'mainconfig',
                {
                                 xtype: 'treelist', 
                                 id: 'treelistDevices',
                                store:storeInterfacesId
                                //store:'Tree '
                },
initialize(containerAux, eOpts)
            {
                           var treeNode = Ext.getStore('storeInterfacesId');
                          console.log(treeNode);
                          var tree2 =  Ext.getStore('Tree'); 
                         //tree2 undefined----
            }
Store:

Code:
   
Ext.define('myapp.store.Tree', {
    extend  : 'Ext.data.Store',
    model : 'myapp.model.Interface',
    storeId: 'storeInterfacesId',
    autoLoad : true,
    proxy : 
    {
        type : 'jsonp',
        url : '------My url------------- ',
        extraParams: 
        {
            command: 'getJson'
               },
        reader : { type : 'json', rootProperty: 'Interfaces'}
            
    }
});
Model:

Code:
Ext.define('Myapp.model.Interface', {
        extend: 'Ext.data.Model',
        config: {
            fields: [
                { name: 'id', type:'string' },
                        ],
        hasMany: {
              model: 'Device',
             name: 'devices',
             useNull: true
}
}
});
Attachment 56244