Making units spawn from multiple siege tower

For one senario, I’ve been trying to make a boss siege tower that spawn units, and I suppose to have multiple siege tower spawning units

However even with 51 create object in garrison it will target the oldest siege tower on the map

How can I make units spawn in multiple siege tower ?

Anybody please I still didn’t find any solution to fix it ?

Anybody please I still didn’t find any solution to fix it ?

Anybody please it’s a bit long now?

Hello please anyone ?