[rebel5555]

I have written two tutorials so for here are the links if you guys & gals are interested.

How to make Vehicles with the Airlift Ability

How to enable Walls

I hope everyone find these tutorials enlightening and please do enjoy!

[Overmind]

I've also added <GameDependency> for wall hubs, so everything would be politically correct and easier to mod later on (if someone want to make other requirements for walls).

i.e.:
<GameDependency>
<ObjectFilter
Rule="ANY">
<IncludeThing>GDIConstructionYard</IncludeThing>
<IncludeThing>GDICrane</IncludeThing>
</ObjectFilter>
</GameDependency>
For Nod, replace GDI with NOD. For aliens, use AlienFoudry and AlienDronePlatform.