-title.RegisterProperty( "flex", 1.0f, Dali::Property::READ_WRITE ); // take all the available space left apart from the two buttons
-title.RegisterProperty( "flexMargin", Dali::Vector4(10.0f, 10.0f, 10.0f, 10.0f), Dali::Property::READ_WRITE ); // set 10 pixel margin around the title
+title.SetProperty( Dali::Toolkit::FlexContainer::ChildProperty::FLEX, 1.0f ); // take all the available space left apart from the two buttons
+title.SetProperty( Dali::Toolkit::FlexContainer::ChildProperty::FLEX_MARGIN, Dali::Vector4(10.0f, 10.0f, 10.0f, 10.0f) ); // set 10 pixel margin around the title