We present a virtual reality framework (VRECKO) with an editor that is capable of creating new scenes or applications using this framework. The VRECKO system consists of objects with predefined behaviors that an application designer can dynamically change. With instances of a special object type called Ability, we may extend or change behaviors of objects in a scene. As an example of this approach, we present an editor that we implemented entirely as a set of abilities. The editing is done directly in 3D environment which has several benefits over the 2D editing, particularly the possibility to work with a scene exactly as in the final application.