How To Set A Variable For Spawn Actor From Class

Hello, I’m trying to set a variable of a blueprint with another blueprint.

The blueprint that needs the variable set is actually not in the scene yet but then spawned into the scene with the Spawn Actor From Class node…
I really don’t know how I can make this work properly.

My failed attempt to set the SpawnCenter of the (not yet spawned) Actor gave me this error report.
I’m having trouble wrapping my head around this… how can I set my variable in advance?

Thanks for any help!

you just have to do the opposite : you spawn the actor, then you use the return value to set your “Procedural World Reference” and his spawn center

Oh, I see… Thanks a lot!