Player blueprint custom volume doesn't detect overlapping volumes

Development Programming & Scripting Blueprint
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1

Hi, I’m making a third person platformer, and I’m currently trying to make my character swim and dive.
In a previous similar project, I made a volume around the character’s head in his blueprint, and when that volume was overlapped by water, it would make the “air meter” deplete. It worked well. But because of a hard drive failure I had to restart from scratch, so I made a new project, and tried to do something similar, but strangely, the volume that I created (that I called HeadVolume) doesn’t detect any overlapping volume. Here’s what the basic setup looks like :

http://puu.sh/oelvY/5362316b05.jpg

And I use this to see if the head volume is underwater or not :

http://puu.sh/oelHv/d0d5fa4fd9.jpg

But whatever I do, I keep getting “false”. I tried changing the volume’s collision properties, to no avail.
To see if I did something wrong with the blueprint, I tried replacing “HeadVolume” by “CapsuleComponent”, but then the blueprint behaves correctly : Printing “true” while swimming, printing “false” while not.
I’m kind of stumped here, I also tried moving the HeadVolume out of the CapsuleComponent, in case the problem was caused by those two volumes overlapping each other, but the problem is still there.
I would be thankful if I could get help.

2

Make sure that the head volume is set to overlap the collision Object Type assigned to the water volume, such as World Dynamic. I think the water volume also needs to be set to register overlap events, just like the head volume.
Also make sure that on the water volume, Collision Enabled has Query enabled.

3

I’ve checked, and everything seems to be correctly configured, but it still doesn’t work.
Here’s the settings for the water volume :

http://puu.sh/oetB1/365b5088c4.png

And here are the settings for the head volume :

http://puu.sh/oetEn/b43dfaed80.png

(They almost have the same settings)

4

You said the cylinder works. What do the settings on that look like?

5

I tried copying the cylinder’s settings, but it still doesn’t work… This is starting to become annoying.

http://puu.sh/oeDP4/0c3f0fac28.png