Reloading ExtJS panel data

Hello

I have a simple page that has two input fields created in PHP/HTML and also an ExtJS Panel.  What I am trying to achieve is the data entered in the two input fields being shown in the ExtJS Panel area dynamically without the page being refreshed.

The input fields are simply "First Name" and "Second Name".  However, when the name fields are populated the data is not appearing in the ExtJS panel.

I believe its because the ExtJS panel has run and I need to find a way to make it reload or become active again so that it can refresh the data store and retrieve the information being sent over.

I have attached a code snippet of the relevant ExtJS panel and dataview window.  Can anyone suggest how to make this refresh once the fields have been populated please.

Thanks

// ExtJS code snippet
 
Ext.onReady(function(){
	
        myData = [
			[finame,sename]
		];
 
        store = new Ext.data.Store({
		        proxy: new Ext.data.MemoryProxy(myData),
		        reader: new Ext.data.ArrayReader({}, [
                       {name: 'firstname'},
                       {name: 'secondname',},
                  ])
        });	
	
		var tpl1 = new Ext.XTemplate(
   		'<tpl for=".">',
   			'<tpl>',
				'<table class="char_select_template" width="100%" cellpadding="0" cellspacing="0" border="0">',
    			'<tr>',
					'<td class="char_select_profile_title">',
						'Name: <br>',
						'Race: <br>',
					'</td>',
					'<td class="char_select_profile_stats">',
						'<b>{firstname} {secondname}</b><br>',
					'</td>',				
				'</tr>',
    			'</table>',
			'</tpl>',
   		'</tpl>', 
    	'<div class="x-clear"></div>'
	);	
	
	charView = new Ext.DataView({
       		id: 'details-panel',
	    	store: store,
        	tpl: tpl1,
        	autoHeight:true,
        	multiSelect: true,
        	overClass:'x-view-over',
	        itemSelector:'div.char_select_template',
    	})	
	
	var panel = new Ext.Panel({
		frame:true,
    	width:'100%',
    	autoHeight:true,
    	layout:'fit',
    	title:'Character Details:',
    	items: charView 
	});
	
	panel.render('character_wizard');
	
    store.load();       // Load the data
 
});

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