Error with the AI tutorial step 13

Development Programming & Scripting Blueprint
1

Hi.

So, I’m following the tutorial wich help you make a basic AI.
I’m blocked with the step 13. I mean, I finished all the tutorial, but when I run my project, I have an error with something that is explained in the part 13.
https://docs.unrealengine.com/latest/INT/Engine/AI/BehaviorTrees/QuickStart/13/index.html

Here’s my error :

xUVYbUu.png
xUVYbUu.png870×106 23.3 KB

and here my Decorator

xUVYbUu.png
xUVYbUu.png870×106 26.3 KB

I saw that some stuff change with the 4.9, maybe something said in the tutorial no longer works?
Or maybe I just ****ed up?

BTW, I don’t understand the error. Did my return value is None so it brake?

Thx

2

Graph looks good. Without seeing your Behavior Tree, off the top of my head:

  • You didn’t set the key, on the Conditional Node in your Behavior Tree, to TargetToFollow
  • TargetToFollow is no longer being set correctly (I’ve seen some weird things when switching versions)

I’m pretty sure we checked this for 4.9, but I’ll run back through it and make sure it still works.