move listener not working in Ext.form.Toggle

[babar.sajjad]

This is how i create my toggle control

var toggle = new Ext.form.Toggle({
	labelWidth: '34.5%',
	//cls: 'rounded bordAll blank-bg',
	style:	{
		width: 'auto'
    },
	listeners:{
		move :function(){
			alert('a')
		}
	}
})

and than call this toggle in a panel, move listener is now working any idea where i am doing wrong