4 stage mophing units?

[shocker]

I have a buildable shop which sells 30 different items. I am trying to make the shot have 4 different forums, each forum sells 9 items (besdies the last which is 3). The person can use a spell to change beteewn the 4 different stages to scroll though items. Example stage one uses the uparrow spell and it becomes a stage 2 shop selling 9 different items.

I was hoping to use the NE bear spell to shift beteewn the stages, but cant get it to work correctly. Does any one have any other ideals on how to change beteewn stages?

 

[FlowerofSpeech]

"Upgrades To" near the bottom of the object editor... play around with that - if all the buildings can upgrade into each other, it's basically the same thing.

 

[shocker]

Thanks, cant believe i did not think of that.

+rep