submit complex model with prefix - asp.net-mvc

Question

I'd like to know your opinion about this way used to submit complex models in MVC
For example, if I have a complex model like this:
public class TOIFormDTO
{
public TradeFormDTO Trade { get; set; }
public OrderFormDTO Order { get; set; }
public ItemFormDTO Item { get; set; }
public TOIFormDTO() {
Trade = new TradeFormDTO();
Order = new OrderFormDTO();
Item = new ItemFormDTO();
}
}
And, I bind it to the view in the form:
#using (Html.BeginForm("SaveTOI", "Item", FormMethod.Post, new {id = "FormTOI" }))
{
<div id="tabs" style="width:1100px; height:500px">
<ul>
<li>Trade</li>
<li>Order</li>
<li>Item</li>
</ul>
<fieldset>
<legend></legend>
<div id="tabTrade">
#Html.PartialForCustomPrefix(model => model.Trade, "~/Views/Trade/Trade.cshtml", "Trade")
</div>
<div id="tabOrder" style="display: none">
#Html.PartialForCustomPrefix(model => model.Order, "~/Views/Order/Order.cshtml", "Order")
</div>
<div id="tabItem">
#Html.PartialForCustomPrefix(model => model.Item, "~/Views/Item/Item.cshtml", "Item")
</div>
</fieldset>
</div>
}
By putting a prefix this way:
public static MvcHtmlString PartialForCustomPrefix<TModel, TProperty>(this HtmlHelper<TModel> helper, System.Linq.Expressions.Expression<Func<TModel, TProperty>> expression, string partialViewName, string CustomPrefix)
{
object model = ModelMetadata.FromLambdaExpression(expression, helper.ViewData).Model;
var viewData = new ViewDataDictionary(helper.ViewData)
{
TemplateInfo = new System.Web.Mvc.TemplateInfo
{
HtmlFieldPrefix = CustomPrefix
}
};
return helper.Partial(partialViewName, model, viewData);
}
This way, when the form is submitted the model is correctly 'recognized' by the action:
public ActionResult SaveTOI(TOIFormDTO toiToSave)
{
}
Do you think this is a good way to procede, is it solid?
Or do you recognized some potential failure?