Why is nothing working even if I compile and save?

The problem is this. Every time I do the correct nodes for anything and hit compile and save nothing happens, today I was following a tutorial for making a horror game and I was scripting an AI monster and after I hit compile and save, nothing happened when i played the simulation. I tried checking
for anything that I did wrong. But there was nothing, i had checked clearly for both my code and the one in the video and both mine and the videos were exactly the same. i even tried watching the video carefully, but still everything was correct .

If somebody can solve this. pls post the answer or if what you think might be the solution to this.

By the way I’m using unreal engine 5.3.2 and also its not only happening for only that project. A few of my other projects have been affected by this issue.

It’s one of two things:

  1. You haven’t done it exactly like the vid ( some videos assume previous knowledge ). You have to listen to what is said as well as seeing what is done.

  2. The video is out of date. In that case, choosing a similar but more recent vid will probably fix it.

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It would be helpful if you could give a few examples (screenshots) of what you tried.

ok

I noticed that you have named the behavior tree as ‘BD_AI’, but you’ve selected ‘BT_AI’ in the event graph. Could this be the issue?

My bad, I’d recommend going through the official UE guide for setting up BTs, maybe it would help:

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