Custom properties on MultinodeTreePicker

Questions
1

I’m using the MultinodeTreePicker to select related content. Is it possible to display custom properties?

My code:

@inherits Umbraco.Web.Mvc.UmbracoTemplatePage
if(@CurrentPage.HasValue("trainingen"))	
{
foreach (var item in @CurrentPage.trainingen.ToString().Split(','))	
{
var page = Umbraco.TypedContent(item);
if(page != null){
    	<div> 
		<a href="@page.Url">
         @page.Name
   		 </a>
		</div>   
        }
    }
}

When I use @page.CustomPropertie the error says “‘Umbraco.Web.Models.PublishedContentWithKeyBase’ does not contain a definition for ‘CustomPropertie’”.

What is the best way to do this?

This is a companion discussion topic for the original entry at https://our.umbraco.com/forum/75654-custom-properties-on-multinodetreepicker