code: void setObjectDynamicProperty( Object object, String propertyName, Object value )
  	{
  		DynamicPropertyBag bag = propertyBagAccess.getObjectDynamicPropertyBag( object );
  		if( bag == null )
  		{
  			bag = new DynamicPropertyBag();
  			propertyBagAccess.setObjectDynamicPropertyBag( object, bag );
  		}
  
  		bag.set( propertyName, value );
  
  		Properties.notify( object, propertyName );
  	}
docs: Sets a dynamic property value on an object.