This Unreal Engine 5.4 short video is about finalizing the Tower Upgrade Flow.
We start by rambling on about how you should do things your own way, and how I suggested an approach at the end of the last video, but then we go with a different approach here. For that, in the Tower Base Blueprint, if the Action is an Upgrade, and we can no longer Upgrade, the Action is then set to None instead. That’s it, that’s the video; short and sweet.
https://dev.epicgames.com/community/learning/tutorials/eBlk/unreal-engine-38-tower-upgrade-and-breakdown-3-let-s-make-a-tower-defense-game