Hi I earlier versions of EpiServer when I have done custom type definitions I have done like this: 1. created a class file 2. Something like this: namespace MyNS { [Serializable] [PageDefinitionTypePlugIn] public class MyProp : PropertyString { public override void CreateChildControls(string renderType,System.Web.UI.Control container) { if(renderType=="edit") { // do something in edit state/mode } // the rest of the code } } } When I compile this stuff in CMS 5, the compilator tells me that: CreateChildControls is Obsolete ? How do I use this mechanism now ? Are there any good examples of doing this ?