can't uses xj.WithTypeConverter and xj.Float

[jaydenluo]

	xml := strings.NewReader(`<?xml version="1.0" encoding="UTF-8"?><price>19.95</price>`)
	json, err := xj.Convert(xml, xj.WithTypeConverter(xj.Float))
	if err != nil {
		panic("That's embarrassing...")
	}
	fmt.Println(json.String())
	// {"price": 19.95}

why i can't uses xj.WithTypeConverter and xj.Float

and how can i may
<?xml version="1.0" encoding="UTF-8"?><name>'Tom'</name> <price>19.95</price>)
to json :
{"name:"Tom",price": 19.95}
name is string , price is number