How to add plugins ??

[Oxii]

here is my map initialization :

Ext.define('App.Map', {        
extend: 'GeoExt.panel.Map',        
alias: 'widget.themap',        
initComponent: function () {           
var me = this;            
Ext.apply(me, {               
 map: map,           
 });        
me.callParent(arguments);    }});

then add map to mapPanel:

Ext.getCmp('mapPanel').add({requires: ['App.Map'], items: [{xtype: 'themap'  }] });

now I want to use the extent polygon here in this example:http://geoext.github.com/geoext2/exa...nt-extent.html
on my mapPanel, not generating a new one.
I am not sure how/where I have to add the plugin property ??

[scottmartin]

For example .. on the grid you would call the plugin like:

    var rowEditing = Ext.create('Ext.grid.plugin.RowEditing', {
        clicksToMoveEditor: 1,
        autoCancel: false
    });

    Ext.create('Ext.grid.Panel', {
        title: 'Simpsons',
        store: store,
        columns: [
            { header: 'Name',  dataIndex: 'name', editor: { xtype: 'customPicker' } },
            { header: 'Email', dataIndex: 'email', flex: 1, editor: editor },
            { header: 'Change', dataIndex: 'change', editor: editor }
        ],
        height: 200,
        width: 400,
        renderTo: Ext.getBody(),

        plugins: [rowEditing]
    });

Scott.