Ability to have sloping walls in SDK

I am developing some farm strip scenery and I am having the same problem I had in FSX. I can slope the walls in developer but when I reload the walls have gone back ti the default setting ie flat. Is there anything that can be done about this as I simply cannot use the walls unless the scenery is absolutely flat

Hello @NEESFARMSTRI, thank you for your request!
All SDK wishlist items should be posted on the DevSupport Forums https://devsupport.flightsimulator.com as is requested by the SDK team.
Cheers