How do you make buildings spawn units?

[KingErikII]

Hello! I am making a mod. In the mod, there is some units. The units will be spawned after you make specific buildings. I dont know how to do that, so can you please help me out? Thanks!

 

[LeeS]

See this sub-topic of this tutorial.

 

[KingErikII]

See this sub-topic of this tutorial.

Thank you! Will see if it works now!