MVVM form binding update error

<vlayout>
	<div>
		fx.item: <label id="lb1" value="@load(fx.item)"/>
	</div>
	<div>
		fx.item.name: <label id="lb2" value="@load(fx.item.name)"/>
	</div>
</vlayout>
<combobox id="combobox" model="@load(vm.list)" selectedItem="@bind(fx.item)">
	<template name="model" var="item">
		<comboitem label="@load(item.name)"/>
	</template>
</combobox>