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Get reference to child actor added in construction script?

I’m trying to add a blueprint as a child actor to a parent blueprint, but I cannot seem to change variables in the child blueprint. Is parent/child communication possible through the construction script?

Construction script is specific. There is no guarantee that your child BP exists when you executing parents construction script.
Also by parent/child you mean inherited blueprint class or just hierarchy ie. which one is your child is attached to?

I’m referring to the hierarchy. I’m guessing that if the child BP doesn’t exist then it would be impossible to set variables in it, so I’ll have to essentially integrate the child blueprint functionality into the parent.