Help with triggers

[IssaKobayashi]

Hi I'm trying to create a map where player has the objective to control a neutral building, and after that all the buildings inside of the area pass to be converted to player control.

Is that possible someways?

Also I want to restrict what certain units can be trained (for player and AI), I read the manual but I can't figured out how to make it

[Puss_in_Boots]

1. Set COND obj owned by PlayerNr1 or objs in area, then use EFF change obj owner

2. AI buildlist cannot be changed.

You can set Player buildlist to default (removes all unit upgrades), and then append upgrade units to that player's buildlist.

You cannot add units that don't belong to a player's race however or that arent already unlocked by the player too.